I have an appointment Monday for CO2 laser for my face to help with scarring. I have already driven a long way for this appointment. I just started having really bad UTI symptoms a few hours ago and I am not sure if it is okay to take antibiotics before the procedure. I ran to the store to grab some analgesic which I just took and also grabbed an antibacterial (methenamine). Am I able to take antiobiotics or at least the antibacterial?