Thank you for your question. What you are experiencing is natural and does not need remedies. When you do not masturbate or have intercourse regularly night emissions are your body's way to discharge regular secretions from the sexual glands. This is happening because your sexual apparatus is functioning correctly. You can help yourself by masturbating regularly. Also, it is worth discussing with your obstetrician regarding their advice about sex during pregnancy. Apart from several medical conditions where having sex during pregnancy can be harmful, generally it is safe and rewarding too. Please discuss your concerns with your doctor instead of assuming you should not have sex. hope this helps