Nfection symptoms and conditions

I started SMZ/TMP DS 800-160 tab 2 days ago. I have bad feelings about this drug and today is 4th July and the weekend. I will quit it to get some other drug for my UTI. But it won't be for 3 days because the doctor is out till Monday to get another drug. Someone tell me a drug that does work for UTI. Someone mentioned Amoxicilln? Can that be used? The headaches are awful. I can't seem to empty my bladder at night so I never really sleep since I pee every 20 mins a few drizzles. I also was given that drug that makes the pee orange. It is Phenazopyrid 200mg. It relieves pain, burning or irritation of the lower urinary tract. Someone offer us info on a positive good drug they have used to help UTI. Thanks!