Anyone experience a pregnancy where perhaps they got pregnant from precum?

My current partner never ejaculated inside of me but we do not use condoms ever, and i stopped birth control since oct 2018. Last week we got a little wild and he came in my mouth and boobs and I rubbed the cum around my vagina, not inside. I read up general info on this on google and it said it is def possible.

I worry because when I did get pregnant by an ex in 2017 (ended in miscarriage), he would def always cum inside me and I knew I was preg because I had implantation bleeding.

My last period was 1/18 and then I got this on 2/7 with photo attached and it looks just like the bleeding back in 2017.

just worried right now but wanted to hear any input of others. Thank u!