It can appear anytime in your life, although I believe it's not something that appears just like that. I think it takes time and sneaks up on you. Some women don't have any symptoms at all. I had endo symptoms but did not know they were endo symptoms at the time until I had my lap.

Definitely ask for a lap as it's the only way they can diagnose endo. I agree with Willow - make sure you find a good endo surgeon!