Progesterone supplememts?!?!

Kaylyn
Just went to the er for abdominal pain and found out my hcg is 13 and my progesterone is 10.. I have absolutely no idea how far along I am so my OB is prescribing me progesterone supplements and he is getting me in tomorrow.. has anyone taken these supplements?!?! What side effects did you have and did you have a good outcome?!!?