is my husband too old to have his first child?

We've been trying for awhile.,my hubby is 41 and I'm 27. I'm morbidly obese according to my fertility doctor. She told me to to lose as much weight as I could over the next 6 months and then we'll start the first round of Clomid. Well my husband is okay with that bc my health is important. However, he bitches and moans about being an "grandpa" for a father. And it makes me feel so much guilt. I feel like 42 isn't old o be a father (that's if I get pregnant early next year).