I have been feeling nauseous and dizzy for the past couple of weeks so have taken 2 pregnancy tests. One was boots on brand and in the first few minutes it showed 2 vertical lines but the line in the results window then changed to horizontal in the next 5 minutes which isnt a result on the instructions. I took a clear blue test this morning and it has come up with a blue smudge in the window but no sign of a line. Has anyone else had any of these experiences before? I am due on this Sunday so will wait until then to do another test