Would this type of thing happen if I wasn't disabled?

I have cerebral palsy and my right leg is about an inch shorter than my left leg, with the difference in my thigh.  I've always known about one leg being shorter than the other, but didn't know I have cerebral palsy until February 2006 when I happened to see my diagnosis.  Having one leg longer than the other on top of the cerebral palsy causes difficulties in walking.  I can walk, but I have a bit of a limp and wear specially-made insoles designed to help me walk. One day in senior year, I was in Child Development and my teacher had me come up and talk about birth defects.  I was up at the front of the room for only a few moments before I gave up.  The other kids were determined to talk over me, and just wouldn't listen.  So I sat back down.  Unfortunately, the teacher didn't make any attempt to quiet the students, which upset me more.  There was one girl in particular who made it clear she thought me to be garbage because of my having cerebral palsy. I haven't made too much of an attempt at keeping in contact with my high school friends.  I have them as friends on my Facebook page, but I don't make attempts to meet up with them.  I did that once and it ended in disaster.  The girl said she would call me to decide on a plan, but she never called me.  I sat around all day waiting for her to call me, only to log onto Facebook later that evening to find a wall post from another friend telling her to have fun with her cousins. Would this type of thing happen if I wasn't disabled?  I don't know.  I wish I didn't have to deal with it.