¿Cuánto tiempo después de la FUM ocurre la concepción (y por qué)?

Respuesta exacta: dentro de una semana

La duración del embarazo para cada mujer es diferente. Depende de una variedad de factores. El período de gestación se determina tomando la fecha del primer día del último ciclo menstrual de una mujer a la fecha en que nace el niño, por lo que se dice que el período promedio de embarazo de una humana es de cuarenta semanas.

LMP is defined as the last menstrual period. It is the time when your menstrual period has lasted when you become pregnant. The doctor uses it to tell at which date you are going to expect your child. Basically, it is told that it can be after forty weeks or sometimes a little time before forty weeks from a woman’s last menstrual period.

How Long After LMP Does Conception Occur?

It has been scientifically identified that the human gestation period is about nine months. or close to two hundred and sixty days. There are a lot more things that people should learn about pregnancy. The gestation period is the time from when the baby was formed in the womb to childbirth. Most men think that they don’t have to learn anything about pregnancy. But a man should be part of pregnancy as much as a woman. He should take good care of his wife so that the baby shall be born healthy. Like the mother carrying the baby in the womb, the father should carry the baby in his heart.

The last menstrual period or the LMP is the first day when periods have ended or the day at which your menstruation lasts before falling pregnant. Remember that ovulation always occurs before your periods start as it makes the egg so much time is needed; hence after a specific time, your periods start. Ovulation mainly occurs for one time in a whole month. It occurs for up to 10 days. The timings of ovulation can vary depending upon the menstrual cycle and how regular it is. Many people get ovulated from eleven to twenty-one days, any day among these.

Type Of ConceptionTiempo después de la FUM
Early ConceptionUn día
Regular ConceptionCinco a siete dias

Conception can take place anytime after the last menstrual period. Early conception takes place inside one day of the period. In contrast, traditional conception is observed anywhere in one week after the last cycle as sperm can survive for up to five days inside a woman’s body.

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Why Does It Take That Long After LMP For Conception To Occur?

It takes that long after LMP for the conception to occur because some time is required for the mating of sperm and the egg. Excessive exercises also affect when a woman starts understanding that her body is facing any changes considering the less weight of a person. So more chances of delay in conception can occur. Timings of ovulation can change like timings of conception observed by a woman. There can be an odd cycle where the women haven’t ovulated and might feel the symptoms lead to an early period rather than pregnancy.

Para calcular el tiempo de ovulación, debe comenzar desde el primer día de la FUM. O también puede calcularlo tomando aproximadamente de doce a quince días desde el período esperado siguiente. Muchas personas tienen el mismo período de ovulación, pero pocas mujeres pueden comenzar a formar óvulos dentro de una semana o incluso después de su último período. Entonces, algunos tienen un ciclo de ovulación conciso. Esto es algo natural para ellos.

El embarazo después del último ciclo menstrual se ve afectado principalmente por la cantidad de estrés que estás tomando, por sufrir alguna enfermedad o dolencia, por tomar medicamentos o por un cambio de estilo de vida, etc. Si tales cosas son, pueden aumentar o disminuir después del último ciclo cuando quedar embarazada. A veces, la obesidad puede retrasar los síntomas del embarazo.


Overall, it can be concluded that LMP is a term used to refer to the last menstrual period before she becomes pregnant. One egg is released from the ovary during ovulation. If the eggs are unable to become fertilized, then they are absorbed by the uterine lining. So, the women get the period. And if this doesn’t happen, it means she is pregnant.

On average, conception can occur as soon as one day after the last cycle, but generally, this happens anywhere within one week. Women should eat good food, take plenty of fluids, not consume alcohol, and never smoke or be near someone who smokes during pregnancy.


  1. https://www.sciencedirect.com/science/article/pii/S0002937802004878
  2. https://www.sciencedirect.com/science/article/pii/S0029784400011315