help me ladies! pregnant or not??

I've done about 6 pregnancy tests in the last 2 days (crazy i know) 4 of them have been Tesco blue dye pregnancies tests - all with a faint blue line almost instantly appearing. One of them was with a clear blue test - again another thin blue line appeared almost instantly. however I have done one pink dye pregnancy test amongst these and it came back negative. I'm so confused.. how can I have 5 faint positives with the blue dye tests and one negative with the pink dye. I stopped my contraceptive pill 7 weeks ago and haven't had a period since which is very unusual for me. I am now worrying myself because I've heard alot of people saying the blue dye tests are rubbish... surely I can't have 5 false positives though? and it's not an evaporation line as it came almost

immediately!! any help would be much appreciated ! picture attached of 4 blue dye tests with very faint lines!!!