More scared?! and concerns?! 5 weeks pregnant,?

RELAX. Stressing can do nothing but HURT you & the baby. Okay? Easier said than done, I know. As far as the progesterone, I have no clue. I'm sorry. But you probably wouldn't see nothing at an u/s at 4 weeks. The doctor should have done a l u/s. Next time you go, ask for a l u/s. I had period cramps for a while too. It's normal. If it is really severe w/any bleeding I would consult your doctor just to be on the safe side. But again, the "period cramps" are normal. & you might not have symptoms so early. I didn't get them til I think a little past 4 weeks. Give it time, you're only at the beginning of your pregnancy. I wish you the best w/your pregnancy. =)