If your interest shows no sign of reviving within a few weeks , discuss the problem with your GP or another professional adviser or confidant. Things can improve with help. The profound physical and emotional changes that take place during pregnancy are bound to affect sexual needs and responses of both the partners. Sexual desires also seem to vary from one month to the next throughout pregnancy. Sexual activity between the father and mother is very important during pregnancy because each partner needs to feel loved and nurtured.
Sex is one of the highest expressions of that love.
There are divided views on this subject. Mostly, neither orgasms nor intercourse can precipitate labour, so in normal cases, it is permitted. But in cases of high risk pregnancies, intercourse could trigger premature labour, premature rupture of the amniotic membranes or even an infection. Do check with your doctor because he knows you best. Even if he does permit it, you must use condoms, because prostaglandins in the semen pose as irritants to the cervix and could result in contractions.