Progesterone

So I had 2 miscarriages end of 2018. I’m now 5 weeks 2 days with I hope my rainbow. Had bloodwork done last week and hcg and progesterone were good. Went back yesterday to repeat and my OB just called and said hcg looks good but my progesterone dropped a little! I’m freaking out.

Will obviously be starting supplements tomo but now I wish I had been on them already! Did anyone find out they had low progesterone after 5 weeks, start, and have a successful pregnancy? Is it too late or am I just being silly and panicking and I’ll be fine lol