Yeah I got that shit too. That day I weight lifted, arm wrestled and went to BJJ, after BJJ class I couldn't lift either of my arms. Huge intense dull pain, shaking in my fingers and such. I never felt such an intense pain before. Went away after a couple of hours but it wasn't my skin or the muscle that was hurting, it didn't hurt anymore if I touched or not so I thought it was the bone or the tendon.
I was dumb so I kept going to class and I kept re-injuring it during rolling and it was only my right arm that hurt and it was effectively dead. I took a week off, came back and when we were doing light technique the shit started to come again, I was pissed off. So after class I just iced it to numb the pain and that work, but it just numbed it, didn't cure it. After that I went to MT class (Like a moron) and my arm started to hurt when I was holding the pads. Boy was I moron. So I just said forget it and stopped for another whole week, no weight lifting, no BJJ period and it just recently went away.
But right now I can advise you even though it's really hard to stay away from BJJ is leave your arm alone for 2 weeks. It will feel like it's better but you do not want to re-injure it, leave it alone.
Hope it helps because I don't want anybody else going through that shit like I did.