Crying in itself is fairly common after sex, you get a release of oxytocin and that can cause intense emotions. However, if you did not consent to intercourse then yes, that is a big deal and that is assault. Given the context there’s “gray area” meaning I don’t have enough info to specific give advice, but I’m not going to ask for any either. If you think you need to report it, you should. Or talk to a therapist and see whether you should report is an option too.