I might be 5 weeks pregnant I'm on 2000mg of Metformin I still have diarrhea from it and was wondering if that's normal during pregnancy?

Metformin. You say that you might be pregnant. This is the first place to start to clarify if you are pregnant or not. You can take a home test and see your doctor. If you are Metformin for diabetes then it very important to start prenatal care so that a treatment plan can be created. Some people get loose stools from Metformin. Other treatment options may be available.