Are these wrong fantasies?

I guess I'll dive right in and describe what I see in my head and how I feel:
Well for the most part the fantasies in my head are about being taken to a disclosed location and being gang banged by a bunch of men, being made their submissive/slave, calling them master or sir. But what really sticks out in the fantasies is what happens when I don't comply, being punished. I actually want to in real life be punished, I want to be smacked until my rear end is red, I want to be whipped or flogged until I can't sit down for a week, for some odd reason this is a big turn on for me, and I am thinking I am mentally ill for it. I am not sure if this stems from being raped when I was younger or not, but I am really confused and conflicted as to whether or not this is normal or if this had a deeper meaning like in my subconscious or something.
Can anyone help me understand? Any help is appreciated, thank you.

Lost of people are into that and I hope some of them speak up soon here. I am not into that but that doesn't make you weird or mentally ill. We all like different things. I was raped as well and I do not wish for this to be done to me. Though it has led to issues of my own. I have preferences I prefer not to discuss at large. After rape some folks like that kinda stuff others do not. To each there own. There is nothing wrong w/ that. There is alot out there about bondage and such. Porn, books, groups, if it were so unheard of then it would not be so common. I think you have nothing to worry about.

I've never been raped but I am into kinky stuff. I am a member of a BDSM forum and they are pretty helpful answering my questions.

It sounds like you have fantasies of being subdued and punished, and perhaps that relates to your feelings about your rape, only now it gives you a sense of arousal, which is completely normal. I've heard that rape can alter your sexuality quite a bit, and even arousal to rape situations after being raped sounds completely normal.

There's no harm to fantasies--it's not real, and you can enjoy them without being harmed.

I'm not into that particular fantasy, at least to the extent, but I have known online lots of people who are. It's a common fantasy. As long as everything's consensual, enjoy it! I don't know if it has some kind of deeper meaning, or is a mental issue, but you're sure not alone and I think you should enjoy it!

One of my friends is into the bdsm part. Her boyfriend struggles with it because he doesn't like to hurt her. I don't think it's abnormal, but I think it is important to think about if you want a partner who will 'play along' or if you are okay with it just being in your head.

No fantasies are wrong, by definition of the word.

I am into a similar fantasy: prison roleplay as a correction officer. If there is one author who definitely helped me accepting my fetish that is Dan Savage. He runs a popular blog called Savage Lovecast. Lots of posts also deal with your problem..