Colonoscopy 12/5 woke to low back pain today has gotten worse but i also have history of back problems bulging and herniated disks l3-s1 coincidence?

Most likely it is : A coincidence given your history although one should look for any signs of fever, chills, sweats or general malaise or not feeling well along with any pain more than usual especially with spasm that does not improve with rest. There is a remote possibility that an infection can occur in a disc via the circulation when one has had a procedure in a region with known bacteria like the gut or mouth.

Could be related : If you woke up from the colonoscopy with a new low back pain, it is possible that you had a small perforation that has now extended. Hoowever, it is more likely that the turning during the procedure flaired you pain from the disc. Especially if the pain is different than your usual disc pain, you should check with your doctor.