Definitely don’t use calmoseptine on vaginal mucosa. Total different type of skin from the perianal area—way more sensitive. The heaviness could be from a prolapse as Jan said (vaginal, “rectal” or uterine). And the burning could be anything from an infection (despite a normal urine culture) to vaginal atrophy and dryness (not uncommon in post- menopausal women). If vaginal atrophy, they can prescribe a topical estrogen cream often with good results. Having more vaginal moisture also reduces your risk of future infection/UTIs. Good to see a urogyn for the incontinence which comes in different flavors, e.g urge, overflow, stress incontinence (every time you sneeze you pee a little) each with some different treatments. Good luck.