Have you ever been discriminated againist because of your sexuality?

I have a few times, when I came out last year (which I regret doing) at first, the people who I usually sat by at lunch (they were all guys) no longer let me sit by them, they yelled at me, called me fag, or if I did try to sit by them they would, all of them, or if they didn't they would act like it's some curse if they were the one that had to sit by me, but one of the guy's would tell them to stop and stuff; now he and I are good friends, but now I just sit by girls. For health class last year, we had to change into work out clothes sometimes (we have a school uniform, being a Catholic, though I not even Christian), we did so in the lockeroom, of course. The guys would not let me change with them, in fact they kicked me out and told me to change in the girl's lockeroom. I changed in a near by bathroom. At the end of last school year (the 2cd to last week actually), I was annoying this guy who was a loser but he thought he was all thug and stuff lol, and he was threatening me in the class before, he was acting he was going to punch me and stuff. To annoy him further after that class was over I stepped on his heels, then he pushed me down the stair there got on top of me (not in the good way plus I have standards trololol) and began punching me, I don't think he ever made contact, but broke his hand, he probably hit the stair lol, then I pushed him off of me. Though I don't remember it, apprently I stood up laughing lol... so I won lol... though I had a mild concussion :/. What was really stupid is that my vice principal gave me a worse punishment, though I did nothing violent, but he also did stupid things to my friend and my older brother (who graduated a year before this). And then the guy's friend posted a picture of his hand on facebook which was black almost and the description was "what happens when you hit a fag", then my mom saw hit, went crazy, almost figured out I was gay, but I denied it (still do!), and she showed it to my vice principle and he did nothing. This year nothing happened really, except: for soccer we had to change, in the lockeroom of course, and then some people didn't let me change with them... sigh. But right now pretty much everyone's comfortable with it and they don't really care, except my family; they will never know.

Sorry for the long story lol, also I'm a tad tipsy, so I might not make any sense lol xD