I hear that you are experiencing very strong and debilitating pain , but I'm not convinced that just prescribing ever-stronger pain meds is the right way to go with this. Has your GP discussed trying any hormonal treatments? Have they discussed your surgical/ablation options? Honestly, fair enough to take the strong pain meds if you need them (and I don't doubt that you do), but with the high level of pain you're experiencing you're better off asking for a referral to a gyno who is known to specialise with endo treatment, and get along to find out what other treatments might help you at this point in time.

Endone is a very high-end pain medication (as is tramadol for that matter). If you're needing to use these frequently, there's a chance of addiction, as well as rebound-pain when you're not taking it. Has your dr discussed using a combination of other pain relief meds, sometimes several of the lower-end ones (ie combined with a good anti-inflammatory) together can be more effective than a heavy-hitter. Fair enough if you really need the pain coverage right now, but I'm worried that this is not an appropriate long-term option, kwim?