I have to say that I have never had this, but my DH is a general surgeon and this is his expertise. Gallbladder disease usually brings on bouts of pain that almost feels like a heartattack. It runs from your chest to your back. You do get the nausea with it, but it is usually accompanied by alot of pain. If you arent feeling the pain then it may just be hormone related. Alot of times pregnant women get it, but it usually dosent present a problem until after the baby is born. The reason for that is, when you are prego, your galbladder pretty much stops working for the 9 months due to hormones. Then once you deliver and your body gets back to normal it tries to start working again. In that 9 months though when it is not working you can develop stones in there. That is why when it starts working again and starts contracting again it hurts. Good luck, I hope that is not the case for you.