Making sense.. bare with me

So I’ve posted multiple tests.. I wasn’t sure my last period because I have the iud. Well I’ve been feeling all pregnancy symptoms... on March 27 th (I think) I had life pink spotting which would be my period but it was only one wipe and that was it. So I put it in the tracker and turns out i would be roughly 4 weeks. Which means I probably wouldn’t show positive just yet! I’ve read where the blue dye tests early and that might be why I see a line on them but not the pink ones! Sooo we’ll find out..