I would make an appointment with the GP, explain your case, say how much it's messing up your life, and ask for a referral to a gynaecologist. I know how much it messed me up - I couldn't travel for half the month. Be fortright, explain how it's affecting your daily living and quality of life. Don't be shy about it, you are far from being the only one!
If you get the op, all you need to do for certain is take three months out of your life to heal fully, before you exert yourself. I did (on the advice of my SIL) and it was excellent advice, it's a three-month investment for your future.
Let us know how you get on ;-)