glucosemine and msm are not pain meds thay are joint supplements
I would call your doctor immediately and find out what is suggested. Also ask your doc about prenatals first, make sure it is safe to mix the vitamins with the meds. He should be able to tell you waht to take and possible prescribe something else that may not effect your baby if you are pregnant. Good Luck!
You should take prenatals...you can even take them if you are trying to get pregnant. It's always a good idea.
As far as what you are taking for pain I'm not sure. You would have to speak with your doc about it.