Medication and exhaustion

I went in for bloodwork yesterday to check my progesterone. It was only 14.7 so they increased my dosage to 200mg twice daily. Anyway, now my stomach doesn't feel well and I have been extremely exhausted all day long. It makes me wonder if it is the medication OR if it is something else.....like my little angel trying to make an appearance finally! I have 6 days left before I find out. Hope I can wait that long and not go crazy in the mean time!!!