I you have not yet been diagnosed by the endo actually being seen during a lap op - and with a cyst and raised CA125 - you will be on fast track now.
Got to be seen by a surgeon as if you were a potential cancer patient.
Once you see the surgeon then surgery is within 2-3 weeks after the meeting depending on when they can fit you in to their schedule. It should not be any longer than that - there are NHS guidelines for maximum waiting for ops with anyone who may possibly remotely have cancer. This is a saving grace for us endo ladies in the begining - unfortunately once we do have an endo diagnosis proper - any subsequent surgeries are all under the endo banner and the waiting lists are a LOT longer.
It is a really good thing to be fast tracked and get seen to and hopefully relieved of the pains you are currently suffering.
My situation was smilar to yours - not yet diagnosed endo - raised CA125 and cysts.
Surgeon saw me on my birthday and the friday of 3rd week after that, i had my op.
The week before the op i had my pre-op discussion with the staff nurse, and the night before the op i attended hosp to have a clexane injection in the thigh.
(to thin the blood and prevent a DVT)
Even though looking back it was very quick - it didn't seem so at the time because one of my cysts was by then a very angry beast and causing me a lot of pain constantly.
Compared with how long already diagnosed endo ladies end up waiting for cyst ops these days (sometimes months) being on fast track has to be seen as the ideal scenario for getting the pain tackled. Please do not concern yourself with this being OC -
OC is much rarer - it generally speaking only manifests itself in post menopausal women whereas if you ar still having periods and are pre or peri menopausal - in almost all cases it turns out to be endo.
I found volatrol /diclofenac really helped keep my pain at manageable levels while i was awaiting surgery, though these days they are doling out Naproxen as a safer alternative. I was still in pain - don't get me wrong i wasn't leaping around like a sping lamb - but it did take the edge off the pain and allowed me to sleep.
Yo do have to keep on top of the pain meds NEVER let them run out before topping up the dose. You can vary the types of pain relief you take to avoid overdosing on any one type within a 24 hour period.
You should expect your op before the 19th March at the latest.
My invite for a pre-op came in the post at very short notice. I was not given the actual op date till after the pre-op.
If you don't hear from the surgeon by 16th March get back on the phone to the gynae department and chase it up.