PLEASE ANSWER!

So me and my husband had our 2nd baby he will be 5 weeks tomorrow. We started having sex 3 weeks and 2 days after I gave birth I stopped bleeding and everything. Well on Wednesday he came inside me..... can I be pregnant? How likely is it that I’m pregnant ???? or am I not fertile yet til I get my period???

Update: I am not breastfeeding if that makes a difference