I'm really sorry to hear about your pain. I was in a similar position to you last year, and when my back went altogether I was in bed for three weeks before I could even get dressed. There was no way I could get to the GP, and my surgery refused to do a home visit. I was prescribed a mixture of the maximum doses of 30 mg codeine, naproxen, and paracetamol, as well as amitryptylene. Because the wait for a referral for an MRI scan and physiotherapy was so long, I paid for a private scan myself, which wasn't nearly as expensive as I'd thought - it was just under £300 and an appointment was available the next day. I was able to stop the amitritriptylene after about six weeks.
I saw my chiropractor once or twice each week, but it didn't help and sometimes made the pain worse, but he was able to interpret the MRI scan for me. I saw the physiotherapist after about three months, and she referred me to the neurosurgery department at the hospital once she had seen the MRI scan.
I started to use a TENS machine at about that time, and that made the biggest difference of anything, and made life more bearable. I bought just a small wireless machine that cost under £30, and it's the best investment I've ever made in my life.
I haven't had surgery on my back yet, because I'm very worried about being away from home overnight (my husband has sleep seizures from time to time and there is no-one else who could stay the night to be here if he has one) but I had a nerve block injection in March, which unfortunately didn't work. The surgeon told me that the bulging disc was very gradually being reabsorbed to a point, and the injection would buy me time if it worked. There has been a gradual improvement over time, and I've managed to reduce the naproxen by 50% and the codeine by 40%. It sounds as though different drugs are effective for different people, and it seems to be a question of working out what helps you, but using a TENS machine made SUCH a huge difference to my pain level, and I couldn't possibly manage without it.