Pregnant & Breastfeeding?

(Posting this on the postpartum mommies group too.)

I’m about 10 weeks PP, exclusively breastfeeding, and on the mini-pill. Husband and I had unprotected sex (with pull-out method) about 3 times since we were cleared by the OB. I’m finding myself feeling nauseous today & spotted here and there since we’ve had sex. I do know that it’s common to not have periods if you’re EBF, but for those moms that have gotten pregnant while EBF, what were your symptoms? I don’t want to scare myself.