Sex 4 weeks after birth

Ok so my husband and I have been trying for 8 years to have a baby and finally we managed and I gave birth to our son on the 6th of jan, the minute I found out I was pregnant at 4 weeks my husband refused to touch me as he was so worried it would lead to another miscarriage so when I went into labour and had a normal vaginal birth with not so much as a scratch, after my healing was pretty quick but I wasn’t on any contraceptive. Anyway last night he jumps into bed and we were just messing around but we got so carried away it was a 10 month build up and just went wild 😝 but afterwards I was thinking omg could I fall pregnant (not that I’d mind to much as I want two children but not that close together) I haven’t started my period, what are the chances of me actually conceiving? Again please no negative comments as if it was to be that would be just fine be me but would prefer a bigger age gaps