Day 54 of cycle. No period.

I'm starting to worry. I'm in day 54 of my cycle and I haven't started my period. I feel like I'm about to start though. At least I feel like I am until I go to the bathroom. Then the period symptoms go away until I have to pee or poop. I feel sick when I don't eat on time and I'm extremely tired. My cervix is soft, wet, and med-high and my sex drive has been insane. I have bad headaches and I've been emotional. My lower abdomen feels full and I've had some pretty bad gas which is not normal for me. My period cycle is normally 28 days and is always on time, I've never missed or been late before. I took 2 pregnancy tests but they both came back negative. I'm not sure what to do.

Is this just a fluke?

Could I still be pregnant?

Is this normal in early pregnancy?

Has anyone else experienced this?

Any suggestions or advice?

I'll be going to the Dr if I miss my next period.