For some reason today, my left hand started to feel numb, I was able to feel light touch, but it felt lightly numb. Then my hand started hurting, like an ache. My heart rate was going up because I was freaking out about caffine. The numbness started going up my arm and it started hurting. However, the more I read about caffine, I knew I was in no danger and the pain and numbness went away from my arm. My hand is still numb though and I feel the ache in waves almost.

Any idea what this is?

I don't have enough money to go to the doctor.

Thanks.