Hi dear ~
I'm sorry for what you're going through. Just wanted to reinforce that your feelings do matter and don't let anyone tell you otherwise (including your parents). You need to make contact with someone in a professional position, someone who will listen to you and who can best advise you. I come from the UK as well and I think they do have school counselling. Well they did at my school... but yea I really think that if they are there, you should go and talk to them. Don't be shy, counselors are really friendly people and they will listen to whatever you have to say.
Also I'm not sure about where you live but if you type in google they generally have a phone number and address for your local GP. You could even just give them a call and explain to them how you are feeling and they'll help you.
As everyone has previously said, continue to post here and feel free to PM me. Take care

~