Do you think that i went a bit over the top with this situation ??should i like apologize them or something?

I think its great you actually got some closure, being made fun of does so much emotional damage, and sometimes we just need to get our thoughts out, and of course you feel guilty, this probably isnt something you would normally do, and you know it hurts to get yelled at and be put down. BUT thats what makes you the better person, you feel guilt. Id just not worry about it, and go on with your life from here.