Take some ibuprofen to help and get to the doctor. I currently have a bulging l5-s1 disc and it sucks. I also did it lifting. It doesn't sound like you have one based on the symptoms you described. Mine was shooting pain down my left leg so bad that I couldn't move. I couldn't even lie down without pain. Typically a disc injury will press on the nerve that runs along your spinal cord, which will cause referred pain to other extremities, legs if the disc is lumbar, and arms if the disc is cervical.
In the meantime, try not to bend over at all, in case it is a disc problem. I really wouldn't do too much until you talk to the doctor.