Irregular periods

Jade
Hi ladies this is my first post.
I came off the pill in June and my cycles are all over the place! They have been 33 days, 36, 49 and now I am on day 54 with no sign of af! I have made an appointment with my doctor for Tuesday next week as I think I may have pcos- I am ovulating as I got positive opk on 8th November. Also I still have a lot of CM! Done around 6 tests and all bfn.
Any ladies in similar positions and have conceived your advice would be greatly appreciated!!  X