Suggest Remedy For Severe Pressure And Tingling Sensation In Head

Hi, my name is Caroline.,i was recently diagonised with migraines but am not sure if that is what am suffering from. The medication i was prescribed is sumatriptan but it does not seem to work (am taking i tablet). i usually have a 'funny' headache where its more of a feeling of alot of pressure in my head, i then have tingling sensations and my head hurts when i cough or sneeze.i also have motion sickness and am not sure if its vertigo or dizziness (more of a spinning feeling) this happens sometimes but the pressure in my head/ headache now seems to be everyday! i ussually get relief from painkillers but not sumatriptan.i sometimes don't think am able to explain exactly what i feel because no one seem to understand but when the attacks happens (now daily) its scary! i don't want to have to rely on painkillers everyday! i have been to different doctors and no one seem to understand me. About 2 years ago i felt numbness on my left side of the body from head to toe for a day. i also have frequent sore throats (not sure if it has any relation). i am worried it might be something like a brain tumor but my doctor wouldn't do a cat scan yet since i do not have any neurological problems as she put it. Pls help, i just need to know what is wrong with me, Thanks.