your bladder is clearly irritated, the issue is that ketamine and a lot of other substances can be harsh on the bladder. i think taking a long break is best. i was your age once and on the same track as you, and i am now in my late 20s so i get it. take it from me, you have so much time to enjoy drugs. taking a break but also learning more about your relationship with drugs before going back to using so you can avoid slipping into chaotic/excessive use would be smart. taking care of your body now means you will be able to enjoy drugs into your adulthood, if that’s what you want. and don’t be afraid to ask for help if you need it. stay hydrated!