I'm so sorry to hear that you feel that way. I've had CF all of my life (14 yrs) and (in my opinion) have done pretty good.
I do not throw up but I have to take a significant amout of Pancreatic Enzymes (MT 20s) 4-5 with meals and 3-4 with snacks. If i forget to take them, I get a terrible stomach ache and cannot leave the house for fear of having an accident. And if I take to much, I will be really constipated.
I am also on a laundry list of other drugs. Mostly for my lungs, although, I do take Ranitidine (ZANTAC 75) and that helps with any extra stomach issues that I may have (Heartburn, Nausia, etc.)
I will be praying for you. Good Luck. Email me if you need anything else