You have had a comprehensive evaluation, and it would be unlikely that I can come up with something over the internet without examining you.
To answer your questions:
1) IC is certainly possible, especially if the testing continues to be negative. Although possible, I am not aware of a clear association between IC and hormones. A potassium sensitivity test can be done if IC is suspected.
2) The time course of IC is variable, and it may progress faster in some patients than others.
3) IC can be difficult to treat. Options would include pentosan polysulfate sodium, intravesical therapy with dimethyl sulfoxide, or amitriptyline. These options can be discussed with your personal urologist.
Followup with your personal physician is essential.
This answer is not intended as and does not substitute for medical advice - the information presented is for patient education only. Please see your personal physician for further evaluation of your individual case.
Kevin, M.D.
kevinmd_