Anxiety hits any of us. I have episodes of severe panic and ocd and I was not in an abused situation. I was in a very loving family - so anxiety can make anyone suffer no matter their background.
I think therapy would be a great idea. I didn't want to either, 9 years ago when all this hit. i felt I was weak and worthless, but I couldn't stand living in the constant fear I was always in. I went for a while, on a regular basis, then subsided and now have not been going for many years. Sometimes I have setbacks, I'm actually in one now for the last few days, but i use the information I learned in therapy and the books I read to really help out. Plus getting support from people here that know what you are going thru.
Hope you'll consider therapy. There's cognitive behaviour therapy and other techniques that help people. I never went on medicines, as I had my own fears on that, but therapy was a huge help for me.