Trigger warning?

This is probably dumb but I needed to talk to somebody that would understand and wouldn’t go running to my boyfriend about it. I have really bad ptsd from rape and abuse and earlier my boyfriend wanted to have sex so we did even tho I didn’t want to (I didn’t tell him I didn’t want to). He was on top of me and I wanted him to stop but everytime I tried to say to stop or ask if we could stop I froze up and got scared because I didn’t want him to be mad.