Second miscarriage...idk what’s wrong with me.

Emily • Trying for baby #1 since Feb 2019

I had my levels drawn again today and they went down to 50 from 140 last week. I was on progesterone, and everything looked good. I was 5 weeks yesterday. This is my second miscarriage around 5 weeks since May. I’m so devastated and I have lost hope. I don’t know what is wrong with me. Why can i not carry to term? I wouldn’t want a still born either, that would kill me. I’m trying to find things to be grateful for, it’s so hard.