Hi I Am A 35 Yr Old Female. Today At

Hi I am a 35 yr old female. Today at work I started to feel numbness in my left hand and it traveled up my forearm. I started to loose dexterity in my fingers like they didnt or couldnt grasp things like i wanted them to. The feeling is still going on and it has been persistant for about 8 hours now. I can feelmy hand and it works but trying to move my fingers in certain ways to grasp things is difficult. Do you know what it might be?