Progesterone level

Can I have stories on how you found out your progesterone levels were low. We are on our 2 month of trying after a miscarriage and I have noticed even prior to getting pregnant I have lengthy spotting, like 6-7 days, prior to starting my actual period and wondering if progesterone could be the issue. I am currently on day 24 of my cycle, 7 DPO, and want to call my OB tomorrow and see if he can check it. I’m worried my body is not giving enough time for an embryo to implant. I misscarried at 5 weeks, 2 months ago, after getting pregnant directly after getting off BC. Weird coincidence.. Would love to hear your side.