As long as I can remember, I've felt the need to check things over and over again, mostly locks, until I feel assured that they're how I want them to be. I've also had really obsessive thoughts about things that really bother me and cause me to feel uncomfortable. Many of these thoughts have caused me to question my sexual orientation and are particularly distressing. Also, whenever I touch something that might not be clean, I can feel the uncleanliness on my hands until I wash them. I also check behind myself multiple times to see if I've dropped anything, and I'm restless when I can't check things multiple times or clean my hands after touching something unclean.
All of these things aren't severely time consuming and don't take up more than a couple minutes of my time, but they're extremely irritating and I'm mocked at times because of them. I'm wondering if they may be signs of OCD. If they are, is it serious enough for me to require treatment?