I also a a 22 year old female with functional dyspepsia.
I also have shortness of breath!
I too faced the same problem and went to doctor, she asked me to go for D4 level test (25-hydroxy vitamin D test), the result was 4 (ng/mL), she prescribed me uprise d3 60k IU capsules. My advice is for you to consult a Physician
Yes, the problems you are experiencing indicate that you have vitamin deficiencies. Pain in joints and weak bones are often an indication of vitamin D deficiency, an important vitamin a deficiency of which often results in osteoporosis and osteomalacia, increasing the chances for people to suffer from skeletal pains. So I would suggest you consult a doctor immediately and get some vitamin D supplements. Since you are feeling fatigued, you may also have B12 deficiency. So from now on you must eat foods rich in this vital nutrient or take supplements. Thanks.