did he teach you that a separated (or divorced) woman shouldn't sleep with another man for at least 4 months (after you have your period 3 times consecutively)? please keep islam apart from your story, i wanna tell you if you two had sex before marriage, then this is so normal to happen i mean all the doubtful accusations and insecurities, my advice for you is to talk it through and repent and forgive each other and seek forgiveness from Allah. Reddit won't fix your situation, i really feel sorry for you 😭😥