Hi, so I'm 16 in a month, my grandma died from a brain tumour a week ago but ever since she has been diagnosed with one I've started having headaches, loss of balance, bad memory, dizziness, a strange feeling in my eyes and also nausea, I have very bad health anxiety and im petrified, it went away for a few days but now it's come back, if someone could help me please or give me advice please Thankyou