Uterine Contraction

I am a 195 days / 6 months, 2 weeks & 1 day old baby

Uterine contraction definition is the tightening and shortening of the uterine muscles.

During labor, contractions accomplish two things: (1) they cause the cervix to thin and dilate (open); and (2) they help the baby to descend into the birth canal.

Uterine contractions also occur during the monthly menstrual cycle and are recognized as menstrual cramps.[1]

In medicine (obstetrics), a contraction is a forceful and very painful motion of the uterus as part of the process of childbirth. Contractions, and labour in general, is one condition that releases the hormone oxytocin into the body. Contractions become longer as labour intensifies. Prior to actual labour, women may experience Braxton Hicks contractions, sometimes known as "false labour."

The uterus also contracts during menstruation. These contractions may be uncomfortable or even painful, but they are generally significantly less painful than contractions during labour. Aspirin can help with the pain. Also a hot water bottle or exercising has been found to help.

The uterus and vagina contract during female orgasm to encourage male semen to reach the fallopian tubes. These contractions may not be noticed by all women; pregnant women are more likely to notice these contractions by late 2nd and 3rd trimesters.[2]

[1] medterms.com
[2] wikipedia.org