Orgasm in first trimester. Another cause for serious concern is a condition called preeclampsia. Leave a Comment Cancel reply Your email address will not be published. You only need to curtail your loving if your doctor has told you to do so. Oxytocin is secreted from the pituitary gland. In later trimesters, it may be comforting to hold the belly. Don't try this at home. Kobo for international eReaders. Sign In. Healthline Media, Inc.