PLEASE HELP ME!!!

I am currently 14 weeks pregnant and I just recently started having the worst back pain EVER!! It doesn't start until I am actually out of the bed, if I am laying down its fine!! However I do work and it's making me miserable throughout the day!! I have tried heating pads, I have tried the back rest, I even put my feet up and nothing seems to be working!!! Any advice I would truly appreciate!!