is it routinely advised to avoid coitus during 1st and last trimester of pregnancy?

healthconcern: is it routinely advised to avoid coitus during 1st and last trimester of pregnancy?
the reason being prostagladins present in semen may lead to uterine contractions and abortion in first trimester and PROM and preterm labour in last trimester?

Answers and Views:

Answer by curious
No.

Answer by tehyashima
If you are trying to avoid uterine contractions it is probably a good idea to avoid, but in many over-term pregnancies it is encouraged. This can help jump start labor. But as long as the OB-GYN says its ok, go for it.