Babies every where...

Emily • I'm 31 years old, my husband and I have been ttc for 2 1/2 years after getting his vasectomy reversed in June 2013 still now luck.
I've been ttc for 3 years and now more than ever it seems like everyone I know is pregnant. Truely there are about 15 people and friends that are expecting. Times like these just make it hard to keep wanting to try to have a baby when it's not worked so far. What are we doing wrong? And I do have a serious question does anyone know about endometriosis?