pain help????

I woke up this morning totally fine. drove to work and about an hour later I had this excruciating back pain that lasted about half an hour. I'm the middle of the back pain, I got stomach cramp that didn't last too long. back pain is gone now but my front is all so uncomfortable. I have to walk hunched over and like shriveled up because my front feels so tightened. thoughts on what this could be?? I haven't been comfortable since this morning and noe it's almost 5pm