Something is so wrong with me........this is a lil funny lol(but I realy need help!)?

I think I`m the most sensitive person ever......my mum just yelled at me for making loud noises when she was trying to sleep(I was,dont blame her lol) but now(this is so stupid)I cant forget about it and feel hurt and angry! I dont know why! when someone yelles at me I feel like crying and I get angry,even(this isn`t even yelling) when I was 5 and in my first year at school,I have OCD so I was sniffing things randomly around the clroom lol the teacher said (in a calm nice enuff way)`stop sniffing everything Jessica'lol.she said it sternly(not with one bit of humour! ) and I felt depressed and angry and shocked at the same time! everytime some wone yelles at me or sternly says something or when the teacher tells me off for say,laughing in cl(that happenes alot for no reason lol) then she says` jess,stop laughing' then I murrmur something like `sorry' and try to have a smile on my face like the others who dont care! but I feel hurt inside and think about it alot!wats wrong?!thnks