text: There is no form of birth control except abstinence that leaves you absolutely free of any chance of pregnancy. So yeah, you could have been wearing a condom, she could've been on the pill, you could be tracking her cycle and pulling out, and it still could have been yours. Nobody needs to be stealing your precious seed from discarded condoms or whatever other weird MRA talking points you have in your head. Also, you're an asshole. Accept your judgement.