If you think there's a possibility of pregnancy, definitely test in a few days (ideally 10-14 days after sex). I'm trying to think back how regular my periods were after baby (I also got my cycles back somewhat early); I can't remember if they were monthly or more sporadic at first. But yeah you'll definitely want to test and get early care if needed as I imagine you'll need extra monitoring if you're pregnant so soon after a c section. They'll probably want to check your incision site to see how it's healing. It's risky to get pregnant so soon but also it's been done with no issue plenty of times before. I had a very traumatic pregnancy with my second (emergency c section) but was pregnant again about 11 months pp. I had a semi-planed cs with my third and recovery was the easiest yet.
Also I'm currently pregnant with the p/o method after using it exclusively for 13+ years and never getting pregnant unless we tried, so.........................there's always a chance!
