I was very much like you - I wanted to do bcp and get through it that way. It got so bad that I couldn't walk even on bcp (i also had a lot of breakthrough bleeding issues).
The problem is, you are having pain and it needs to be determined if it is endo (and have it removed if possibe) or if it's not - then you really need to investigate what is going on.
When I went in to my dr 4 days before surgery she wanted it done the next day - so I don't think it's healthy to go as long as I did. I was lucky they fit me into their schedule so quickly but I was in so much pain at pre-op that I wasn't "in condition" for surgery (luckily after some pain killers my body was OK the next day for surgery).
I know this is not what you want to hear, but I did end up having surgery. Now I know for sure what is going on and the damage it has done it has been an eye-opener and I feel like I'm treating the problem w/ bcp now rather than covering up the symptoms to what we "think" is going on. Sometimes knowing for sure that it is endo can help...I was going crazy - why am I in pain ALL the time? Now I know and I'm getting through it.
Let me know if you have any other questions. I didn't even know endo was a possibility until my dr brought it up and it felt like hitting a wall.
Good Luck
Still having pain... 
