With my second child I had loose stools the day before I had her, I was 39 weeks. I'm 32 weeks with my fourth now and I've had loose stools for almost two weeks now. I'm thinking it's a virus or something. I'm having bh but nothing productive. With my other two pregnancies I didn't have anything like that. If you're really worried about it, your best bet would be to call your dr., if nothing else for your peace of mind.