Off progesterone

So my doc took me off progesterone two days ago. (I'm 12 weeks) i had the hardest time not taking it last night. (I still took it the night after my appt) it just makes me so nervous! I know the science behind why it should be fine. I just can't get it through my head. Even had what I thought were cramps this morning. I think it was all in my head...they weren't strong, probably just stretching out bc I'm making room for twins! Anyone else have the same anxiety about stopping?