Hi LincsLady22, there are lots of things that can cause infertility but 10 months of trying really isn't that long so don't lose hope! I know it feels like a long time when every month you get so disappointed - I've been there and now it's almost been two years of TTC with no luck.
As I understand it even a small amount of endo can be very painful but my gyne said that it's an unusual disease with no rules. I have what was described as 'mild to moderate' endo (found on my ovaries, bladder, uterus and PoD and sticking my uterus and bladder together and my appendix to my ovary) but I only experience severe pain one day a month and some other mild symptoms including the same pain you get during sex. The lap isn't too bad as it's key hole surgery the recovery is usually two or three weeks from my experience and what I've read on here. When I had my lap they also did a dye flush to check if my tubes were clear. Several people told me that you are most likely to get pregnant in the first couple of cycles after the lap and dye flush but I didn't however I know a friend who did after her op. So this might be all you need, but don't count on it.
My hubby also has a sperm issue (low morphology) but this has been much improved by him taking Well Man Conception vitamins, cutting down on booze and exercising more. We're not sure what specifically has made a difference but it's the end result that matters so we're just sticking to all of the aforesaid.
If you do go for the lap and get diagnosed it may help with your access to fertility treatment. Once my hubby's sperm results came back we got a fertility clinic referral due to us both having issues. At the time we had only been trying for a year and a lot of GP's will not do a referral until you've been trying for two years or more.
Best of luck whatever you chose to do. It's your choice don't get pressured into the lap if you don't want it. xx