Welcome!:)
I was also sexually abused by my father until I was 12 years old. Now I'm also 22 years old, also have been diagnosed with PTSD. I'm not struggling with memories, I don't have that many. But the past 8 months have been really tough on me. I have a boyfriend since September 2019, I've made several posts about me struggling with trusting him.
Also; not only my father sexually abused me, but several men did. The other men were strangers who assaulted me on the street when I was around 13/14 years old. Also one boyfriend when I was younger assaulted me. Because of what happened to us in the past, doesn't mean every individual is the same. This image our brain created about men, feels (in my experience) like the reality. But it's important to remind yourself it's not the reality. There are good people out there. There are lots of men who don't abuse others. We just grew up with the fact that the men close to us can't be trusted and are abusers. In fact; the most important person you need to trust in your life can't be trusted. It's completely normal to have trust issues as a result, so please don't put the blame on yourself!
I am still figuring out how I can trust my current boyfriend. I know he can be trusted, but I still can't trust him because I will make myself too vulnerable or something. It will get better, but it takes a loooong time, again; in my experience.
I don't really know how I can help you with this issue because I'm currently dealing with it as well. I do hope that you don't feel alone, that you feel heard and don't put the blame on yourself. Glad you found this site! X