Incontinence

Hello everyone,
Am 21 yrs old single female who is complaining of 5 months of continuous incontinence. Well, things are getting worst, the first time I just noticed one droplet of urine in my underwear , then it become continuous dripping of urine and the quantity is increasing. UTI and stones were excluded, urodynamic studies showed that the sphincter is working probably but the bladder ability to hold urine is very low ( 40 - 80 ).
Now I've just started taking vesicare ( anticholinergic ) but no improvement yet. Am just worried and confused especially that am still young.
Did anyone face the same problem in a young age? What could be the cause? What about the progression and the prognosis of the case ?
Thank you very much