So we trying to concive. This cycle I thought I was definitely pregnant. But I got bfn and then I got my period few days later. And then God knows why, I took a boots' '5 days early' test a week after my period . I accidentally got some urine on the test window. The thing is I got a positive. So I tested again the next day with an asda own brand and bfn. Could the bfp be because I got urine on the window, or is it worth testing again with a sensitive Test?