I don't think what you've been through would be called post-traumatic stress disorder. I think it's just that bad experiences will make anybody anxious that they'll happen again. It's probably nothing more than your brain working normally, the anxiety is there to get you to take steps to avoid a repeat of the bad stuff, but it might do that in quite a crude way, such as completely avoiding the opposite sex, so it's often useful to really look at your experiences and fears in detail, and try to work out a way of getting your desires met without too much risk of your fears getting fulfilled again.
I got rejected a lot when I first started out, and that gave me anxieties about girls, and I took that baggage into the relationships I finally got. And really traumatic experiences with them would also get carried through into the next partnership. The main problem was that I didn't know this was happening, I didn't see flashbacks or understand that when my partner scared me, it was because of my past and not because she didn't give a s**t about my emotional well-being. I don't think I even realised any of them had really loved me until a few years ago. I never looked back once a new one was around, I'd feel so buzzy and confident that thought I had no emotional baggage at all.
So I'd advise you to look in detail at what's been happening to you, and how it might affect you in the future. I usually find that once I'm aware that I might be hypersensitive to this or that, I can actually handle it a lot better when it happens, because I then see that my history is in the mix, and I don't fall into the trap of blaming the dame by default.
But I wouldn't let the focus on emotional baggage blind you to the bigger picture. There are loads of things that affect relations with the opposite sex - upbringing is one, and AS of course has lots ot features that complicate the picture. One of my worst ones has been an amazing blindness to who it is I'm getting involved with.....my selection process seems to be horribly flawed - I can ditch one partner for doing a particular thing, and then get completely enchanted by a woman who is doing exactly the same thing to a greater degree.........I don't seem to anticipate how I'm going to feel after the first few weeks, unless I really use my critical thinking, cut through all the romance, and ask myself some really tough and embarrassing questions. Even then, I can focus so hard on making sure the next partner doesn't do one particular nasty thing to me, that I overlook all the other nasty things she might do.