12 days late VFL CB but BFN FRER

So I’m now 12 days late for AF.

I’ve taken a few tests here and there and the first two I took (FRER) were negative.

I took two CB tests and got a vfl, one darker than the other, two days apart.

I waited another 2 days and just took another FRER and it’s a BFN.

I’m losing my mind at this point. I’m never this late, and I’m experiencing symptoms I never get, unless I’m pregnant.

(Tingly/sore boobs on/off, nausea on/off, cramps on/off, always hungry, etc.)

I’m having a hard time dealing with all this and don’t even know what to think anymore.

Anyone not get their BFP until super late, or not produce a lot of HCG and still get their BFP?