If you want my opinion, I REALLY do not think you have CF. The swollen fingers have nothing to do with CF. If you are thinking that that is what clubbing is you are wrong. It is a good idea to get a sweat test done just to be safe though. I'm just positive that you don't have CF. People with CF usually only have thick GREEN mucus; not clear. The sore throat, ear infections, and canker sores also have nothing to do with CF. CF doesn't cause any of that. The strained bowel movements do not represent CF either. If you had the Delta F 508 gene, you would be having oily diarrhea on every BM, you would not be constipated. Before I was diagnosed, I was NEVER constipated. I had diarrhea all the time and once I was put on enzymes I was THEN constipated. You never mentioned being unrealistically skinny or having many lung problems (other than the pnuemonia as an infant) So it's a good bet that you don't have CF. If you want to be sure, it wouldn't hurt to go get that test done though.