TTC after Chemical Pregnancy

Hi! So I had a chemical pregnancy last month. I had blood drawn until my hcg levels were down to 0. I never got my period, but today, over 4 weeks since the chemical, I have a BFP. Just wondering if anyone else got pregnant right away without having period. I know my levels were down to zero, but I’m still paranoid that this is from possible remaining hormones from last month.

Side note: we did not have unprotected sex until about a week after the chemical. I also DID ovulate this cycle based on OPK test..

Thank you 💜