oops... Could i be pregnant again?

Sorry if this is a stupid question but I am 5 weeks 1 day postpartum. I gave birth to a beautiful baby girl December 20th. The baby's father and I had sex today unexpectedly and he was on top in missionary and he finished inside me. I read a lot that women are extremely fertile after giving birth especially when they aren't exclusively breastfeeding, which I'm not. I never got my period yet after birth and ive stopped bleeding from giving birth. I'm sort of worried and might be a little paranoid. im having mucousy white discharge and im extremely hungry all the time. Can someone ease my mind? what are the chances of me being pregnant?