I don't know if it's any help or not, but I grew up with polycystic ovarian disease as well as endometriosis and have had 12 laparoscopies between the time I was 14 and 28. Cyst pain can definitely come and go, as can endometriosis pain, with it worsening around the time of your period and again around the time you ovulate. I always described it as "waves" of pain, and my mom, who always was the one to take care of me, compared it a lot of times with labor (which I realized was the case when I had my son). Just because it's not constant or consistent doesn't necessarily rule out cysts if you're just going on pain. Ultrasounds can rule them out, but can't detect endometriosis.
Laparoscopies aren't too horrible. The day of the surgery, you will be out of commission for the whole day, usually. You'll be awake and able to talk to people and things like this within a couple hours after surgery, but really feeling pretty lousy. The second day you will be up and around more, but the third day (for me)can be worse than the second, between the anesthesia being completely worn off at this point and the fact that I always overdid it the second day because I was feeling so much better. By the fourth day, things are pretty good and you're sore, but definitely mobile and up and around.
If any of this happens to be your case, there are some great doctors out there, and a ton of options these days. At fourteen, I was told I'd never have kids, and to not go through the heartache of trying. Here I am today on Mamasource, with a gorgeous two-year-old that wasn't even tried for :)
Feel free to email me or let me know if you need any other advice or just a sympathetic ear. I know the thought of being out of commission can definitely send one into panic mode, but I always also considered the fact that I'd be out of commission for a longer time because of the pain if I didn't find a way to take the three days and have the surgery.
Good luck. I feel for you!
C.