Chemical?

Kaitlyn

I’m 15 weeks postpartum. I ovulated on CD 16 and on 11 & 12 dpo I took 3 tests (first response) and all 3 had faint lines. I was THRILLED. I went for bloodwork on 14 dpo and my hCG was zero and my at home test was negative. Did I have a chemical pregnancy? Was it just a bad batch of tests? I still haven’t gotten my period though, is there anything I can do to encourage my cycle to return to normal? (I had a few normal cycles before this) Thanks!!