Dark FRER, vvvfl on cheapie

So I got my first positive yesterday with a cheapie. My period isn’t supposed to start until tomorrow. The cheapie showed a vvvfl. That afternoon I took a FRER which showed a pretty dark line (darker than I ever got with my CP last month). Took another cheapie for kicks and giggles at that time and it was the same as that morning which doesn’t surprise me. This morning I took another cheapie and it’s still the same. I know there’s small amounts of HCG in me at this point. But it seems odd to me that the FRER was so dark and the cheapie was sooo faint. Pics for reference