Well it definitely sounds like it is linked to your abuse, and is psychological in origin. You might want to check with the docter anyways, just because it is pychological doesnt mean it is not real or does not have physical implications.
Im sorry to hear that you were abused, it is so hard to see another one of us in here, but it is so good to see ourselves in here talking and getting it out. Just remember a few rules for dealing with this. It wasnt your fault, you deserve love, and what happened to you was wrong. With all the things you have to go through, these words wont be much comfort, but try to remember them anyways. If you were raped, as a child or an adult, nothing can change those three things, because they are true.