I'm not sure what's happening and I'm a bit scared. 
I've been sh for a long time but I never went too deep, two months ago  i started going just a bit deep so i can see little droplets. I only do it on the upper half of my forearm and there is a lot. For some reason I started feeling pain and sometimes numbness on my hand and my biceps. Is it normal? Should I worry about it? I don't know what's happening, this is the first time and I'm scared i fucked up. Please help.