Combination pill

Hello ladies... so quick background story I got on bc March 2018 and recently stopped April 2019 because of the withdraw bleeding, weight gain, didn’t like what it was doing to my body.. etc and got my period May and June... and ever since then I have not gotten my period and take 4 pregnancy tests with the timeline.. did get an uti last week and got light pink blood so I thought it was finally going to come and didn’t also took a test again today and still negative. Any one else experience this or knows?