Numbness and tingling in left arm and left leg

I will call my PCP this morning to see if I can get back into her today.  Like you said, this has gone on long enough.  It also seems to be getting worse.  My arm feels heavy all the time as does my left leg.  My memory has been getting bad also for weeks now.  I know the memory is my B12, or I hope that is it... I hope it isn't a sign I am getting OLD...LOL. 

Thanks
DeborahL.