I had bleeding gums really bad in my last pregnancy and until June I hadn't seen a dentist in a long long time,she gave my teeth a good clean and wen I mentioned the bleeding gums she booked me in for cleaning every 3 months til baby arrives,it's ur gums reactin wiv the plaque that makes them bleed. Mine stopped bleeding for about 6 weeks after the clean and have just started again (prob due to plaque buildin up again). Def also reccommend corsodyl although it can stain ur teeth xxx