I am sorry you have to feel this way...that is terrible.

Someone once told me that you are only a victium if you choose to be!
Do not let it control you because by doing so you are giving the person who did it power over you!
Please consider therapy if you are not currently going. If you "friends" are questioning you then I would distance myself from them. A true friend would never question you like that and would always be there to support you and offer a shoulder to cry on. Don't surround yourself with negative people like that or you yourself will become negative.
I sure hope things start to look up for you soon. Please keep posting and let us know how you are doing.