Do I have OCD?

[pythagorean_theorem]

I've had certain issues ever since kindergarten. I would make up mental "speeches" because of irrational fears. I would repeat them over and over, adding more and more on. At some point, I added actions, but people around me were worried, so I convinced myself to stop. Eventually, I would scrap an entire speech because I feared that my word choice was bad, and that it would make things worse. As I got older, this continued, although the fears changed. About a year ago, it started getting worse. I started having issues with pausing videos at certain points. If I paused a video when it was showing someone with an obvious negative quality, I would need to go to another video and pause it on someone that had obvious positive qualities for the same amount of time. Then, it spread to games. I would need to get at least a certain score in games before I quit. Soon, it spread to people. If I touched someone with certain negative qualities, I would need to touch someone with positive qualities for the same amount of time. It spread to looking at people soon after. Then, it spread to numbers. If I said certain numbers, I would have to say a number that was significantly higher. Finally, it spread to names. If I said the name of someone with certain negative qualities, I would have to say the name of someone with certain positive qualities.

I don't know what to do. I have a sister that I really love, but she has certain negative qualities, and I can't look at her or touch her. She enjoys poking me, which is a problem. When I tell her not to touch me, she continues. I've considered telling my brother about this, but I know he would never look at me the same way again. This issue is tearing my life apart, but if I tell anyone, I know that it will get worse. Help!