I tested 14dpo with a FRER and it came up BFP (it was light pink but immediate and could clearly be seen from accross the room)...I tested again on 15dpo with a Dollar Tree and it was BFN...So I tested again this morning with fmu with a FRER and a Dollar Tree and they were both BFN....still no af...but it doesn't look good for me :( ..I don't know if the FRER was false or if it's chemical or what is going on....This is all so frusterating!
I'd say test again with another FRER. I know some tests can be more sensitive even though they're the same brand. The $tree is questionable on realiability lately anyway. The good thing is that you still don't have AF so maybe your next test will show something.
I had a questionable FRER a few cycles ago that I saw a definite light pink line but as time went on, the line disappeared and a big circle covered the test area, so I guess I had a defective test. But FRERs are usually very reliable. Try not to get too down and test again after holding your urine