Re: Scared of brain tumour, please help...
As a long-term migraine sufferer, I agree with everything said above. Also want to add, it is not uncommon for migraines to start around 12-18 years old so don't be that alarmed. Migraines can be successfully managed with medication.
Breathing problems may be due to anxiety, at least partially. I had that as well. This too is something that can be managed.
Honestly, I don't think you have a brain tumor. But if you can get an MRI that would provide a definitive answer. Good luck!