how long did it take to get pregnant after premature labor

Harmony
I'm wondering how long it took for everybody to get pregnant after a pregancy loss. I loss my twin boys 01jul16. Started trying two weeks after. It's now September and nothing? I am 40. Guess I was lucky I got pregnant at all. 13 years of infertility and endometriosis. I was 5.5 mths pregnant when my water broke. No infection. Just slow unexplained leak that ended with two boys that lived for 1/2 hour. It was sad but I thought if I could just get pregnant again i could go back to being happy. That was my light in the darkness. Now I'm getting really depressed and the clock is ticking. I'm 40. Most of my classmates are starting to experience empty nest syndrome. Not just starting out. Does anyone know any tricks