Advice on what to do possible uti?

Andrea

So I went to the doctor cuz I was having to urgently pee, I would pee very little was getting lower back ache and crampy down there and it burned a little not a lot and there was pressure they tested my pee and said I didn’t have one. That was two days ago it doesn’t burn but I’m urgently always having to pee and little comes out still should I go to the doctor again ? Could it be anything else