I want to start by thanking everyone that responded to my first post, it helped, and I appreciate that. Everyone on here is so awesome.

Anyways, so my issue started off when I was about 15 or 16 years old. I was babysitting a little boy and he went to go use the restroom and he was having a hard time pulling his pants back up, so he yelled for me to help him. I went in the bathroom to help him, but when I saw "everything," I had that scary groinal response. Which I hate. I immediately felt sad and it bothered me for a bit. I was able to let it go after a while though. I have been reading that a groinal response is caused by OCD and anxiety but my OCD didn't start until after that time. (Not because of that either). So now I'm always scared that I really do have an issue.
Here is another weird thing though: last summer, some of my family came down to visit and my cousin brought his girlfriend with him and she has two little boys. We were all hanging out in the hotel rooms (conjoined rooms), laughing and having a good time... During this time, one of the little boys took off all his clothes and started running around naked. As he ran past me, I got freaked out and did my best to avoid him. (Now don't laugh at me), but the only thing I could do is throw myself against the wall... It was the furthest I could get from him. LOL... I didn't want him to touch me or come near me.
So you can imagine my confusion.
I have also read that OCD can cause feelings and arousals that are not real. But is this really true? I have had actual feelings like I WANT to do something to a child and that I would if it was legal. I immediately feel horrible when I do have those feelings... I mean, HORRIBLE. I get depressed.

Could use some more insight. Thanks all. <3