Do I have some symptoms of OCD or something else?

It appears that you do indeed have some mild symptoms of OCD. It is to your benefit to seek help from a mental health professional. The good news is that they have lots and lots of medication for this type of disorder, and most individuals respond quite well to the medication, once you find what works for you. You should ask your parents to set up a mental health evaluation for you. They should do this, but if they do not, I suggest you speak to your school counselor and ask their assistance in the matter. Being a minor and a school student, you should have some kind of health insurance that will cover the cost of this. Should you still have a problem getting hooked up with mental health services, call information on the phone and ask for the number of the nearest public mental health office near you, then call and make an appointment to be evaluated. You should not be ashamed or embarrassed to seek out and go to mental health counseling, for a great many young people such as yourself have mental health issues. You can have a nice normal (good) life if you address this problem now. I hope you will, and I wish you the best of luck.