HELP PLEASE - EXCRUCIAITING UPPER BACK PAIN

Hi everyone, Ok I am 32 weeks pregnant this Saturday, and over the past five years i have suffered back problems, I have two slipped discs, a crooked spine and a bulging disc( horse back riding and figure skating injuries along with years of waitressing caused the issues) I was getting yearly cortisone shots in my back until I became pregnant. Its been over a year since I have had my shots and over the past few weeks the pain has become inensly worse. I work full time and sit at a desk all day. The chairs are good chairs and should help but instead the pain radiates more and more from sitting for long periods of time. Stnaidng momentarly releaves it as well as walking. The only time it doesn't hurt is when I am laying flat. I obviosuly can't do my job standing or walking and deft not lying down, the problem is I can't handle the pain any more, I am in tears daily and can't breath the pain is so intense. ITs not lower back pain either its paind radiating right below my shoulder blades. I just don't know what to do anymore, I can't concentrate at work and have no motivation to even show up any more because of how bad it feels. I see my doctor on Friday but still have to work the rest of today and Tomorrow. Does anyone have any suggestions, I do everything I can once I get home but by then I am relaxed and able to lay down so the pain decreases it usually occurs horrendously about an hour into work and gets worse as the day proceeds.

PLEASE I CAN'T TAKE IT ANY LONGER!!!!