I had my period twice in February 2016 one on the 7th but it was light and only a couple hours then on the 26th it was light and only a couple hours so I mad me a doctors appointment and they said I might have a UTI and said my pregnancy test came back negative its march 12 and I still have not started my period I usually start on the 10th or before u have been sexually active can a UTI mess you periods up or am I pregnant