The symptoms you describe above through out the paragraph, have you been having struggles with them even as a young child?
1)Such as did you count as a child?
2) Did you have trouble with intrusive thoughts?
3)Did you have trouble staying focused in school or staying on task?
4)When you say you skip the paragraphs, do you just skip them with out reading them?
5) When I read the part I talk about you correcting spelling/punctuation, it strikes me as if you are doing it as way to try and feel good, because you have control over. Since you do not have control over your parents and the way they are/act.
6) It seems like there maybe a lot of intrusive negative thoughts that you are dealing with by not trying to deal with them, So you try and do things to occupy your mind such as counting, imagining a song, counting anything to make you feel good and in control.

I am not in the profession of mental health so I cannot say for sure what you should do or really how to help, but it sounds like your family is not excepting of your lifestyle of being a homosexual. But You cannot let that hold you back, if they cannot change, although hard cannot effect you. It will take work and you will have to depend on people whom you can trust a lot. I would talk it over with your partner try to work things out slowly and accept that your family does not have the same views as you but that cannot change who you are. Do what makes you happy, not what makes them happy. Also you might try talking to a therapist to try and learn some strategies you can use to cope with the feelings you feel because of these incidences. It it is a slow process, but it can get get better. You just have to be persistent and work at it along with your partner. Lead by example become positive and show that your families negativity is not effecting you and they will slowly start change and accept who you have become as they cannot change you nor should they. They should love you as the child they raised.

--maus