AF 24 days late

Krista

DH & I have been TTC baby #1 since July 2017. AF is currently 24 days late. At 2 weeks late, I kept getting BFNs, so I decided to get a blood test, which turned out negative. I dreamt two nights ago that I received a positive pregnancy test, but brushed it off because I didn’t want to be disappointed again. I was feeling sick at work that day, so I took a cheapie “easy @ home pregnancy test” when I got home & got a FAINT positive - I was SO shocked, but wasn’t sure to believe it since it was so incredibly faint. I took a First Response this morning & got a stark white negative. Do any of you ladies have any insight on this? Are those “easy” tests faulty? Could I be one of those women that just hasn’t produced enough HCG yet?