Dreams are intended to disturb you because they are bringing messages from your primitive nature (in symbolic images) to point towards a different way to deal with your present situation. It's possible that the fact that you aren't really dead but contemplating how your family will react, suggests that perhaps you woulod be well advised to engage some other people to help with your web site to insure that it continues to present your work (and perhaps others' as well) if you should become too disabled to do it all yourself.
My wife sold jewelry in a high-end marketplace ("Ruby Lane") for several years, without revealing her illness (not CF), but she wrote many little "wisdom stories" inspired by her jewelry. If your unusual life has led you to any unique experience or wisdom (including a wisdom tradition), you might write a perspective of your own--For my wife's jewelry was very beloved, because the person who bought a piece could tell the story that my wife had invented (often tied to the name she had given to the piece.
You haven't commented on how the dream would seem different if it were a grilled chicken breast instead of bubble gum filling up your moth. I know it may seem silly to answer such a question, but using your IMAGINATION gets you into a different way of thinking, and then every word you write can help my intuition find out what YOUR unconscious mind means by "too full of bubble gum" instead of ANYTHING ELSE. If I just use MY imagination I could be too different from what YOUR UNCONSCIOUS MIND would say. Dreams are presented in a Different Language than ordinary thinking, so I'm trying to get you to use that language In Your Own Words.
Do you ever chew bubble gum? Do you ever put TOO MuCH gum inyour mouth? This could suggest that you’re either 1. Not nourishing your own physical or spiritual health & growth, but distracting yourself with teenager pleasures instead, or 2. That you’ve been too involved with trivial entertainments, so you aren’t ready to express yourself verbally with spiritual depth. But there’s often an opposite meaning for main symbols like the bubblegum, such as that it’s important to have fun, even if you have a tough disease.That’s why I need your help with contrasting grilled chicken & bubble gum—both filling up your mouth.