Is it not gonna happen again....

So I know most of the ladies on here r TTC for the first time and I wish u the most amazing amount of luck and bby dust but here's my q?....I have 2 girls so I kno I can conceive I had a pretty bad marriage and was forced to get my the tubes tied (long story) any who we are no divorced and I have met an amazing man and we r 3 yes strong and have decided we want to extend our family we saved the money and I had tubal reversal surgery Dr said everything was good on my end. We had him tested and everything was good as well....BUT he tried for years with his ex with no luck...I'm nervous its not goin to happen. Some words of encouragement would b appriciated!