What's wrong with me?

For a while now, everytime I get off an elevator or an escalator I feel dizzy and lightheaded for about ten minutes. Like the other day, my friend grabbed me and spun me round a few times, and I felt pretty dizzy afterwards, and last night, I got straight out from a boiling shower and lied down straight and I felt dizzy, like my body was shifting around. I do feel sick most days, ranging from sharp pains to nausea, but never at the same time as the dizziness. I'm also very unco, and I used to have absense epilepsy, but about two years ago I tried to stop using the tablets to see if it had gone and it had. If it helps, I am 14 years old and I am only slightly chlostrophobic, but not completely cus I got it from my mum, I'm only scared of being in small areas like 1x1m or anywhere I can't move around. Most days I only have about three gles of water, so it could be dehydration, but I've always drunk little water and this only started a while ago. I also am a bit hard of hearing, but it's not severe and I think it's hereditary, if that makes a difference. Please help!