Hello Colours and Welcome to Neurotalk! It is great to have you here although im sorry that you have to be here - everyone on the forum is so nice and friendly so i'm sure you will fit in right away!
I'm so sorry to hear about everything that you are going through!

I really hope that you can get some answers from the tests that you are having and that the doctors can figure out a way to make you all better.
It's nice to meet another teenager on the forum! I'm 14 and have a Chronic Pain Condition in my left leg, right arm and possibly left arm also. I also deal with headaches sometimes from the pain and medications - my doctor said that mine is a tension headache and is caused from the pain and is my bodies way of "coping" with everything.
Here is the link to the Headache forum that you might find useful - everyone there is really nice and friendly so i'm sure they will try and help you if they can!
http://neurotalk.psychcentral.com/forum32.html
Take care and I hope to see you around the forum more real soon!
Alison.