Opinions!

I'm not really ttc but I wouldn't mind it if I got pregnant so I don't use condoms or Bc. I feel like I have my own natural birth control since I have pcos. My boyfriend knows this but he acts like I'm trying to trap him by getting pregnant? He doesn't want kids for a while but he cums inside me all the time soooooo would it really be totally my fault if I was to get pregnant??