Kelly,
You're not being a baby...you're being very logical in thinking about your future.
First of all, our children need to understand that they sometimes need to pitch in and help.
Second of all, you have some resources to help you, such as the NMSS, NT, etc., that could probably give you info on how to get supplies, etc that might be needed.
And third, never count out the possiblity that you might meet someone. You never know!

My DH has been super with all of the stuff going on the past month. But I feel so guilty...yes, we said "in sickness and in health," but I still feel bad for sticking him with a sick wife.

Know that you're not alone. Try to save some money for a rainy day. We're there for you!