Idk why but I always feel bad at the fact my kids weren't full term babies.. No, they didn't or…

Idk why but I always feel bad at the fact my kids weren't full term babies.. No, they didn't or don't have any medical issues.. I just feel like it's something I did to cause my body to evict them so early.. I love the hospital I had them at because all Dr I came into dealings with said it's nothing I did wrong.. They said IF I was to get pregnant again it may be a full term baby.. I'm just overwhelmed I don't even wanna risk my health having another child.. God blessed me with a boy and a girl for a reason..