Endometriosis and TTC

Marissa
Hello ladies, 
I have questions about trying to conceive and endometriosis. I am not yet diagnosed with it, I will be having the surgery to diagnose in about a week. But I am curious about women who have it and their experience with TTC. I would just like to know if some of you have had difficulty or if some have not. Just basic insight from those that have endometriosis 
Thank you!