What would experts say? could a doctor prescribe meds to help a 16 year old ibs sufferer?

Yes: More importantly is to find out why you have symptoms of ibs to begin with. A good history, exam, lab tests , teaming up with a gastroenterologist and working closely with your primary care physician can often find the correct answer. You may also try elimination diet where you record food that seems to bother you more than others. Best wishes!