Af late after chemical

Hi, this is my first official post I guess.. I have had two losses this year. My first was a mmc that I found out at 14 weeks but was measuring 7 weeks (first doc didn't believe when I said something was wrong, so I changed doctors) and I had a d&c July 5. Fast fwd, I got my period in the beginning of August and was cleared to try again. Found out we were pregnant again the 28th. Unfortunately, it didn't stick and I started bleeding again the 9th of September. My OB truly believes we got unlucky twice :( My bloodwork shows nothing wrong, and my u/s post-d&c showed a healthy utuerus. I've been cleared to start trying immediately but here I am, cd34 and no af in sight. My tests all seem to show bfn or maybe evap lines at best. Glow thinks I'll start today, but I've never had a cycle this long! I want to believe that I implanted late and I'm pregnant again, but the tests aren't even definitely showing faint lines..... anyone who's had a chemical or loss at 4 weeks, any advice? Did it throw your cycles off? I had bloodwork on October 3 that put my hcg at 1 (about 8-9dpo).