Progesterone dropped

Caroline • Ttc for 5 years now. We just lost our sweet baby at 18 weeks due to pprom. Heartbroken but have been given the ok to try again.

My HCG is going up nicely. But my progesterone is up and down even with 200mg daily. I’m 6 weeks and it took me 4 years to conceive. I’m worried. Has anyone else experienced this?