Pregnant??

I’m 3 months postpartum. I’ve had unprotected sex maybe 3 or 4 times since having my son. Each time he pulled out. But, I’ve been spotting. Cramping. Hormonal. I’ve never had spotting in between periods. The way I knew I was pregnant last time was I missed my period. I’m so scared I could be pregnant again. My body literally can’t handle another pregnancy so soon.