First response early response new design.

Ellie
So today I took a FRER. Within a minute I seen a BFP! As the day went on my test darkened up into a big fat pink line. I have heard this brand gives false positives. How would I know the difference from an evap line vs pos. or a false positive. I read the test an had a BFP in under a minute or so....I'll include pictures. My fiancé says its for sure positive but I'm on the edge. Testing again tomorrow just want opinions an such before hand.