Daft question 🫣

So I’m 7.5 weeks pp from an emergency c-section and me and my husband have had sex 2 or 3 times in the last week (he pulled out each time). My question is, does anyone know how long are you “extremely fertile” for? We are not using any contraception. *Please do not advise me to. I am aware of the risks however I have been on EVERY single pill (I suffer from migraines which are made worse by the pill), I do not want to have any of the coil options, I have previously been on the depo injection which did not agree with me either and I don’t want the “rod”. We have used condoms in the past but I alwayssss end up with thrush so I don’t want to use them.* I am fully aware that there is a huge risk of becoming pregnant if we aren’t using preventions but I just wondered how long you are extra fertile for🤣 Not sure if it makes any difference but I still haven’t had a period which I assume is normal for me though! (I hadn’t had a period for nearly 2.5 years before I fell pregnant the first time) For context, I have PCOS and it took 2 years of trying to get pregnant and I miscarried my first pregnancy.