MC & Depo

Hi! New here to Glow! I'm completely irritated at this point & somewhat obsessed lol. I was on depo from Oct 2012 to Oct 2013. I finally got a BFP at the end of May this year only to miscarry June 13. My HCG went from 39 (when assumingly I was 6-7 weeks) at the ER to 16 and progesterone was less than .5 the very next day. Bleeding stopped after a week. Got my blood drawn again on the 24th and it was at 3 and progesterone still less than .5. I've never (knowingly) had a MC and have three kids. I'm frustrated bc I feel the depo really messed with my hormones. Additionally, I'm worried whether the MC caused the low progesterone or vice versa. Ahhhh.