L.C.
I would go see the doctor immediately! Any kind of infection and your body being under stress is effecting the baby! the doctor or nurse may know a better solution to the problem, it could be some other type infection!
I didn't have any symtoms of anything and started having contractions with my second pregnancy mild ones but I knew what it was. Went to hospital and turns out I had some sort of bacterial infection on my girl parts, can't remember the name of it, they had to give me antibiotics and guess what, if left untreated it causes premature labor...with rest and laying down my contractions stopped and I never dilated, but that was scary and they had to treat me during my deliver with antibiotics too since I had had the infection during my pregnancy, that was no fun at all!
Go to the doctor ASAP!
Edit:
So sorry to hear that! Well the monistat is safe to use, but if your insurance will allow you to see another doctor then do so, or demand that the original doc do some tests...Which I know can be hard to do, you don't want to be bossy to someone who is suppose to deliver your baby and you should trust your doctor. The thing I have learned over the years is that I have to be my own advocate and speak up and be heard even when I don't know what is wrong but know something is wrong, doctor are very often not right and sometimes don't understand what we are feeling or going through. good luck honey!