{"id":6319,"date":"2014-10-16T11:00:41","date_gmt":"2014-10-16T09:00:41","guid":{"rendered":"https:\/\/www.imferblog.com\/?p=6319"},"modified":"2026-05-10T21:51:03","modified_gmt":"2026-05-10T19:51:03","slug":"semana-7-de-embarazo-al-principio-de-una-nueva-vida","status":"publish","type":"post","link":"https:\/\/www.imferblog.com\/?p=6319","title":{"rendered":"Semana 7 de embarazo: desarrollo del embri\u00f3n y s\u00edntomas | IMFER Blog"},"content":{"rendered":"<p>La semana 7 de embarazo marca un momento curioso en la gestaci\u00f3n: muchas mujeres acaban de confirmar el positivo y todav\u00eda est\u00e1n procesando la noticia, mientras que dentro de ellas ya se est\u00e1 desarrollando un embri\u00f3n que, aunque invisible a simple vista, tiene ya esbozos reconocibles de los futuros brazos, piernas, ojos y nariz. La velocidad del desarrollo embrionario en este per\u00edodo es asombrosa.<\/p>\n<h2>C\u00f3mo est\u00e1 el embri\u00f3n en la semana 7<\/h2>\n<p>Al final de la s\u00e9ptima semana de gestaci\u00f3n, el embri\u00f3n mide aproximadamente 8 mil\u00edmetros de longitud corona-coxis (de la cabeza al coxis). Para hacernos una idea, tiene el tama\u00f1o de un ar\u00e1ndano. Pero en esos 8 mm est\u00e1 pasando mucho:<\/p>\n<ul>\n<li>El ojo contin\u00faa su formaci\u00f3n y adquiere una pigmentaci\u00f3n oscura caracter\u00edstica de esta fase.<\/li>\n<li>Se est\u00e1n formando las fosas nasales y la boca primitiva.<\/li>\n<li>El miembro superior est\u00e1 m\u00e1s desarrollado que el inferior: la placa de la mano ya tiene el aspecto de un peque\u00f1o mu\u00f1\u00f3n sin dedos diferenciados a\u00fan.<\/li>\n<li>Aparecen las yemas que dar\u00e1n lugar a las piernas en las semanas siguientes.<\/li>\n<li>El cord\u00f3n umbilical est\u00e1 completamente formado en esta semana, a partir del ped\u00edculo de fijaci\u00f3n que conectaba el embri\u00f3n a la placenta en desarrollo.<\/li>\n<li>El coraz\u00f3n ya late con regularidad, aunque es tan peque\u00f1o que solo se detecta con ecograf\u00eda transvaginal.<\/li>\n<\/ul>\n<h2>S\u00edntomas m\u00e1s frecuentes en la semana 7<\/h2>\n<p>La semana 7 suele caer en plena fase de mayor intensidad de los s\u00edntomas del primer trimestre. No todas las mujeres los experimentan con la misma intensidad, pero los m\u00e1s frecuentes son:<\/p>\n<ul>\n<li><strong>N\u00e1useas:<\/strong> pueden ser continuas o aparecer en momentos concretos del d\u00eda, especialmente por la ma\u00f1ana. En algunos casos se acompa\u00f1an de v\u00f3mitos. Suelen ir cediendo gradualmente hacia la semana 12-14.<\/li>\n<li><strong>Fatiga intensa:<\/strong> el organismo est\u00e1 trabajando a pleno rendimiento para sostener el embarazo. La progesterona tiene tambi\u00e9n un efecto sedante. Escucha a tu cuerpo y descansa cuando lo necesites.<\/li>\n<li><strong>Cambios de humor:<\/strong> los niveles elevados de progesterona y hCG pueden hacer que est\u00e9s m\u00e1s sensible o que tus emociones fluct\u00faen m\u00e1s de lo habitual. Es normal.<\/li>\n<li><strong>Estre\u00f1imiento:<\/strong> la progesterona ralentiza el tr\u00e1nsito intestinal. Si ya ten\u00edas tendencia al estre\u00f1imiento, puede acentuarse. Aumenta la ingesta de fibra y agua.<\/li>\n<li><strong>Sensibilidad mamaria:<\/strong> los senos pueden estar m\u00e1s sensibles, pesados o dolorosos.<\/li>\n<li><strong>Mayor frecuencia urinaria:<\/strong> el \u00fatero, que est\u00e1 creciendo, ejerce cierta presi\u00f3n sobre la vejiga.<\/li>\n<\/ul>\n<h2>Qu\u00e9 es normal y qu\u00e9 requiere atenci\u00f3n<\/h2>\n<p>En la semana 7, un sangrado leve (\u00abmanchado\u00bb) puede ser normal, especialmente si es rojizo o rosado y ocurre sin dolor. Sin embargo, cualquier sangrado abundante o acompa\u00f1ado de dolor abdominal debe ser evaluado por tu m\u00e9dico sin demora, ya que podr\u00eda indicar un aborto en curso o, con menos frecuencia, un embarazo ect\u00f3pico.<\/p>\n<p>En IMFER realizamos la primera ecograf\u00eda de seguimiento entre las semanas 6 y 8 de gestaci\u00f3n, momento en que se puede confirmar la presencia del latido cardiaco y la correcta localizaci\u00f3n del embri\u00f3n. Si est\u00e1s en seguimiento con nuestro equipo, no dudes en consultar cualquier s\u00edntoma que te preocupe.<\/p>\n<p>Puedes leer mas sobre este tema en nuestra <a href=\"https:\/\/www.imferblog.com\/guia-infertilidad-pareja\/\">guia sobre reproduccion asistida<\/a>.<\/p>\n<p class=\"imfer-article-cta-inline\">\u00bfTienes dudas sobre este tema? <a href=\"https:\/\/www.imfer.com\" target=\"_blank\" rel=\"noopener\">Consulta con nuestros especialistas en IMFER<\/a>.<\/p>\n<p><strong>Tambi\u00e9n puede interesarte:<\/strong> <a href=\"https:\/\/www.imferblog.com\/la-consanguinidad-duplicaba-el-riesgo-de-anomalias-congenitas\/\">Consanguinidad y anomal\u00edas cong\u00e9nitas: riesgos y opciones\u2026<\/a> y <a href=\"https:\/\/www.imferblog.com\/la-consanguinidad-duplicaba-el-riesgo-de-anomalias-congenitas\/\">Consanguinidad y anomal\u00edas cong\u00e9nitas: riesgos y opciones\u2026<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>La semana 7 de embarazo marca un momento curioso en la gestaci\u00f3n: muchas mujeres acaban de confirmar el positivo y todav\u00eda est\u00e1n procesando la noticia, mientras que dentro de ellas ya se est\u00e1 desarrollando un embri\u00f3n que, aunque invisible a simple vista, tiene ya esbozos reconocibles de los futuros brazos, &#8230;<\/p>\n","protected":false},"author":1,"featured_media":5701,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[1289,24,1295,1294,7,1286],"class_list":["post-6319","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualidad","tag-actualidad","tag-embarazo","tag-embriologia","tag-embrion","tag-fertilidad","tag-reproduccion-asistida","h-entry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.5 (Yoast SEO v27.6) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Semana 7 de embarazo: desarrollo del embri\u00f3n y | IMFER Blog<\/title>\n<meta name=\"description\" content=\"En la semana 7 de embarazo el embri\u00f3n mide 8 mm y ya tiene esbozos de brazos y piernas. 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