(((Melissa))) - I'm so sorry for what you are going through. I won't tell you to not feel guilt, as from my experience, I've felt it any time I've lost someone, no matter how they died. For me, it's just one of the many feelings I go through in the grief process.
Everyone is different, and it takes time to work through them. Please take care of you and your miracle baby.
Hugs and prayers,
Amy