Feeling guilty to TTC?

I know this is so common, a pregnancy after a miscarriage. But I am 30yrs old, had a miscarriage 10 years ago, then 5 years later had a baby with gastroschisis. He is a healthy happy rowdy 5 yr old boy now 😊 3 months ago we had a miscarriage and are trying again. I'm a little nervous since I've never really had a healthy pregnancy. I know how blessed and lucky I am for my son but I feel like I'm asking for/ doomed for another unhealthy baby or pregnancy. Does anyone else ever feel that way? I keep thinking that maybe this is my chance at a healthy pregnancy at last?