BFP to BFN! 😭

A week ago I was so excited to share my BFP! The second line was a vvfl. I didn't have to show my husband bc he guessed just based off of my moods (just like with my other pregnancies). Yesterday, I decided to take another FRER to see if the line got any darker... Instead, I got a BFNothing. AF is 4 days late. Most of the symptoms remain, but idk how to feel right now and I haven't told the hubs that I got a BFN. Come Friday morning, I'll take a CB digi. That should give me my final result. That BFN has made me sick to my stomach. It's hard going from BFP and super excited to a BFN and all feelings have been crushed.

Has anyone else had something like this happen before?

Did it turn out to be a false Neg or was it chemical?