No one wants to arrive at the hospital too early – or risk giving birth in the car. While there’s no need to time yourself like Olympian Usain Bolt in a 100-meter dash, you or your partner do want to start noting how long the contractions last and the length of the time between them (measured from the beginning of one contraction to the beginning of the next).
So unless your practitioner has advised that you avoid orgasm during pregnancy (often because you’re at risk for preterm labor or miscarriage), sex is safe during pregnancy and there’s no reason to be concerned about these types of contractions following intercourse.
I have also heard that if the female orgasms before the male that the orgasmic contractions are no longer present, this migration effect is not observed, and acidic fluids are absorbed into the uterus which can be detrimental to the sperm deposited in the vagina following the female orgasm.
Other contractions were common in writing until the 17th century, the most usual being de + personal and demonstrative pronouns: destas for de estas (of these, fem.), daquel for de aquel (of that, masc.), dél for de él (of him) etc.; and the feminine article before words beginning with a-: l’alma for la alma, now el alma (the soul).
A midwife at my favorite practice recently told my client who desired a natural water birth… you should come to the hospital when your contractions are three minutes apart, lasting a full minute for at least an hour =311…If you do this you will be just in time to get in the tub and shortly push your baby out.