Hoarseness

I am a 21 year old female. I have a normal BMI of 20. I do not ever smoke or drink coffee, and rarely drink alcohol or soda. For the past few years, I have experienced very frequent hoarseness which is more more and impairing my ability to speak clearly and communicate with others. I also have difficulty swallowing and trouble catching my breath sometimes. I drink sufficient water every day to ensure that my mucus membranes are not dehydrated, but I still have persistent hoarseness that is affecting my quality of life.

Something I've noticed that might be significant -- Once in a while (once a month, tops, I do not have a caffeine addiction) I pop an OTC headache medicine containing caffeine to treat a headache, and for hours after I take it, I have a beautiful, normal voice. I know that caffeine helps blood vessels constrict, so does that mean that my throat is permanently swollen?

Any advice?