Dakota,
So sorry to hear you're going thru this at such an early age. Mine is a male perspective.
Regarding the catheter, I've had two TURBT surgeries since Dec 15 and had a catheter both times. First time was for 12 days and second was for 3. Hopefully they gave you a day bag (to wear on your leg with a velcrow strap...to keep the catheter in place) and a larger bag for night (hang on the side of your bed or place in a small waste paper can...hang inside the can off the side) so you can sleep the entire night without getting up to change your bag). I usually wore lose fitting clothing...sweat pants (outside) and gym shorts or pjs (inside your home). Getting up and walking around is important also...hopefully your post-op instructions addressed this. YouTube has various videos regarding how to use the Foley catheter.
Best advice is to relax and take it one day at a time. Your pathology report will determine the way ahead. Wishing you the best!
12/15 - Diagnosed Ta HG, 1.5cm Pap, Focal CIS
3/16 - Began BCG following NCCN and SWOG guidelines
2/19 - Ta HG recurrence and CIS/Ta HG in right kidney/ureter
2/19 - Nephroureterectomy to remove right kidney/ureter
9/19 - BCGx33 completed
2/20 - Invasive HG urothelial pT2 in prostate stroma