I got what I was sure was a vvvfl within the time frame on a frer two days ago. Retested today with a pink dollar tree test and it was negative, only an evap line and i don’t think it was even close to being in the time frame, I can’t even get it to show up on camera. I want to tell myself it’s just bc I got a cheap test but everything I can find says they should be just as sensitive as first response. Is it even worth it to buy a better test or should I just take the cheapie’s word for it?