Ovulation and fertility after childbirth

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Probability of conception after childbirth is a vital question for those, who do not hurry to conceive a new baby right after birth of the first one

Ovulation and fertility after childbirth

However, there`re also other cases (although not so frequent): parents want age difference between children to be as much smaller; unfortunately, tragic circumstances also happen (for example, induced abortion connected with serious fetal deformity or high risk for a mother`s life). Regardless of reasons that cause your interest towards probability of conception after
delivery, first of all, it`s useful to understand what happens with ovulation during post-natal period.

During pregnancy a woman`s pituitary starts producing mammotropic hormone, preparing breasts for lactation, stimulating lactation and at the same time suppressing ovulation. When a baby is nursing, secretion of mammotropic hormone intensifies, and as interval between feedings increases - it falls. As a rule, while a woman is breastfeeding a baby, mammotropic hormone suppresses ovulation completely - and then lactation amenorrhea appears (absence of menstruation during breastfeeding period). However, there are also cases,
when menstrual cycle is restored quite quickly while sufficient lactation. We can state the following concerning probability of conception.

Firstly, it`s almost impossible to determine any rules as for terms of ovulation recovery. I.e., of course, it is known that breastfeeding causes delay of ovulation, however, you cannot foretell term of the first post-natal ovulation exactly. Terms of ovulation recommencement after delivery are very individual. Moreover, they can be different for same women after different deliveries, so you should not rely on your previous experience in this question. The main index of ovulation recommencement - is the first post-natal menstruation. Menstruation starts earlier in women, who do not breastfeed their babies and it starts on the 7th week in breastfeeding women.
Not to miss the first post-natal ovulation, it is recommended to use temperature test. Breastfeeding women should start measuring basal body temperature since 6th week after delivery, and those who don`t breastfeed - since 4th: not to miss the moment of its increase, as it is a sign of ovulation.

Secondly, after menstruations are restored, anovulatory cycles can take place (i.e. menstruation without ovulation).

Thirdly, absence of menstruation does not mean a woman cannot conceive. The matter is that moment of conception can fall right on the middle of just restored cycle.

It is noted that while appearance of following pregnancy, a baby often refuses from maternal milk. They suppose that the following mechanism of a baby`s refusal from breast works here.
When a baby starts nursing, hormone ocytocin is produced in mother, and it stimulates contraction of unstriped muscles.
This leads to contraction of end canals of lacteal glands (milk is like “injected” in as baby`s mouth). Uterine muscles are also contracted at the same time.

This is very useful after delivery, but in case of a new pregnancy uterine hypersthenia can lead to miscarriage. So, probably, with coming of following pregnancy secretion of oxytocin is
lowered, that a baby feels difficulties while nursing. Besides, under the influence of hormonal changes in organism, accompanying coming of pregnancy, milk taste can change also.
However, there`s no regular connection between a baby`s refusal from breast and repeated pregnancy.

Modern medicine states that for complete recovery of female organism after delivery interval between childbirth and following pregnancy should be at least 2 years, although, of course, this is rather a recommendation, not an inviolable rule.

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