Feeling Cloudy near lower stomach. Out?

Hi I have a urinary tract Infection couple of weeks ago. It is kind of normal one I only had urging to go to urine. I consulted doctor and he gave me citralka and cifran. I was feeling good after using it, went for urine culture test and the report is sterile. Again last week last sunday I had a little urge of going to urine but it was only for a day on Monday I started having lower abdomen pain a mild one. I went for an ultrasound sound scaning. The reports say everything is normal. My question is my I feel pain in my lower abdomen? Like as if we get body pains after working out? I feel like little cloudy at the bottom part of my stomach and mild pains in lower abdomen. My urine is completely coming normal no pain or bloodly urine. Give me suggestions or tips please I'm really scared.