Uti with no burning

i’m posting on here again cause this has been going on for about a week and the antibiotics i took didn’t do anything. For a week ive been having to pee more frequently and i’ve been having very mild lower stomach and lack pain. i went to the doctor and was prescribed amoxicillin for 3 days but it wasn’t getting better. i’m still not entirely sure what’s going on and im starting to worry that it’s not a uti and it’s something worse since im not experiencing any of the other symptoms like burning.