Stool test detected d.fragilis but doctor ignored it. Hyperactive bowel sounds are scaring me and I have acid reflux and nausea, no vomiting or diarea?

Right choice. You need to get a relationship with a physician who takes time to explain and who you trust. Managing reflux is tricky. Finding a cause for nausea may be a challenge. Gluten enteropathy, Whipple's, and Crohn's are concerns but I'd ignore "pop" claims about that amoeba.