PTSD & Orgasms

My last relationship I went through so much trauma with my ex that I’ve been diagnosed with PTSD. Halfway through the relationship I wasn’t being sexually satisfied, he had health issues that effected his sex drive & so he would rarely want to have sex, it went from every day to once a week to once a month and always quickies under 5 minutes. Fast forward to now, my sex drive is extremely low, and whenever I’m masturbating when I feel like I am almost at the point where I’m going to cum I instantly get turned off, dry up, and start crying. I really want to get help for this issue but I haven’t been sexually active for 6months, and this trauma has been going on since 2019 so I feel like it shouldn’t be effecting me anymore but it is, so I want to get help. I’m not sure what kind of therapist I should see, or even be comfortable talking about this kind of stuff with, or if they could even do anything to help me since I don’t have a partner right now to help me out if they give me assignments to try at home or something idk. But any advice is truly appreciated 😔😭