That's great. If you're really interested in this avenue, your vit D and PTH will need to be tested. Over 17 years, first I was diagnosed with secondary HPTH(Hyperparathyroidism) completely by accident. Low vitamin D was the only thing my PCP was concerned about..led to my PTH getting too high..led to GI endoscopy and an accidental diagnosis of celiac disease, stayed on high vitamin D supplements, stopped eating gluten. Drs washed their hands of me, declaring that my celiac was the whole problem...idiots. Several other medical problems began. Along with the CIC just getting worse and worse. Another accidental finding dealing with my pancreas and that I have redundant splenic flexure( both are very often never noticed), ....now I find out that I have had primary HPTH for 10+ years, 3 opinions later, I have tertiary HPTH, my glands are so worn out and overstretched that I have to have 3 1/2 of the 4 glands removed...which for me is a GREAT accidental finding, cuz this affects the whole body. Look up the symptoms, severe fatigue and CIC are at the top. If you're 16, like your name suggests, in my humble opinion as a 65 yr mom/nana I'd follow thru with this. But it will probably be like swimming against a rip current....no one will believe you could possibly have this problem. I have twin 45 yr old daughters. One started with kidney stones at age 16 and has had many more since, no dr ever mentioned any of this and I didn't know until now. The other daughter has CIC, has just been tested for celiac and HPTH issues, answers are eagerly awaited. You deserve a chance at a healthy life.