How I've been feeling lately

Lately,I've been feeling left out of everything and like an outcast.
I thought about this lately cause I was on Facebook,and one of my friends and this other girl was talking about how they're gonna have this movie night with Star Wars and ice cream and everything.And then I started thinking about how no one ever wants to do anything with me.How no one ever says,"hey wanna go to a movie this weekend?".No one does that.I'm always just left out of life.
And at school,people dont exactly bully me,they're just rude.Like the teacher will say that we had a test last tuesday,and I didnt hear the last,so I'm like when did we have a test,and a kid did the retard sign at me.
And whenever I make a joke,and no one gets it,everyone tells me to shut up.There like,"shut up,damn,no one cares"
And one of my friends told me that in sixth grade,lots of people were talking about me,saying Im ugly and fat.It really,really hurt.I dont think ill ever forget that.

Sorry if i sound like a whiny bitch.I just needed to get that off my chest.