For me, I have found that a bulging disc can be helped with muscle building in the surrounding area. Scuba diving may be perfect for that. However, when it comes to carrying and wearing heavy gear, standing and sitting in gear, and walking long distances with gear on, you can blow a disc. I have blown L-3, 4, and 5 and have subsequently had them removed in two operations 20 years apart. My L-3 and 2 are bulged and I have to be very careful with them. I put much of my gear on with help in the water and I need someone else to put my boots and fins on.
Seek medical advice from a good doctor who may understand the demands of diving. Blown discs are no fun at all.
I also have my C-5, 6, and 7 fused with part of my hip bone and a titanium plate. That accident resulted in partial paralysis of my right hand and a worse situation with my left hand and arm. That requires more assistance with getting into my gear, particularly with putting gloves on and handling weights.
All in all, while certain aspects of diving are difficult for me, I stay within my limitations.
Again, I suggest conferring with a qualified doctor, seek assistance while diving when needed, and stay within your limitations. Also, an elastic back brace works wonders for me, both in and out of the water.