Just a thought, and I am not claiming to know heaps bout what you are going through but I do have PCOS and endometriosis. I know you said AC is not an option as very expensive (I hear you on that) but what about clomid? I am currently on it and Its not working (as in its still not making me ovulate yet) however, it is making my cycles shorter (I average bout 70 days) so if you took that it would be possibly assisting conception and hopefully would shorten your cycles even if you don't ovulate on it? I know its not a long term fix though just thought its alot cheaper than other fertility treatments.
i have tried clomid several times in the past, and unfortunately it didn't do anything - 3 tabs a day (150mg i think) didn't make me ovulate at all.

my current cycle is averaging 42 days (been tracking it since DD's birth) so it's not THAT bad.

had an argument with my mum about cycles today - apparently me bleeding for at least a week (heavily) and up to 3.5 weeks out of every 6 week cycle is my body not bleeding enough in comparison to a "normal" 28 day cycle.

sigh - yes mum, i get that you're scared something may be wrong with me (try being ME!) but c'mon - stop grasping at straws and stressing me out MORE!