Read/comment/when do i test?

Its been 33 days since I've had my baby (vaginal) me and my fiance only waited 3 weeks and 4 days to have sex not the whole 6 weeks. Now we have sex like crazy, unprotected. But, he pulls out. But sometimes he pulls out and we wait like 5-10 Mins before we do it again and sometimes there still cum left on his penis.... and I'm sure there still some left inside his penis hole so when he stocks more comes out.. Know what I mean? So can I get pregnant like that Or does the sperm die since its left there for that long?? I heard u can get pregnant super quick after having a baby and when should I take a pregnancy test just to be sure I'm not pregnant!!! So comments plz, and don't be rude!