Scared to death and need some advice......

My name is Brandi I am 39 years old and just found out I can have my tubal reversal done under my insurance and I can have a child with my husband ( he has none ) .where the fear hits is my age , the factor of is it even possible to have a child at my age ? What else am I going to have to do to conceive after and is their anyone out their that has had a reversal at my age who has conceived and has a child ? How long did it take if so . All the questions running through my head and I am scared to death it will not work and I will have to see the look of disappointment on his face ( my husband ) when he hears bad news if any . Any one who can answer any of my questions would be helping me in so many ways , thank you in advance .