Hi guys I was wondering if anyone could help? I did two Tesco hpts last night. Thought I could see something faint on both of them. Waited until the 10 minute development time was up and then opened the test and I have two thick faint blue lines? I took a frer the morning after not fmu and negative? Are these blue evaps? Or was the frer faulty as I've heard they can be? Any help would be very much appreciated