Help!

Paige

So I had my son five months ago and I’m worried, I’m not starting my period it’s been 23 days and no sign of anything but my body hurts it’s aching and cramping. My last start date of my last period was November 12 it lasted 3-4 days. I took a pregnancy test I got a faint line then after that I’ve had negatives I went to the er Christmas <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">Eve</a> they took a pregnancy test it was negative then they checked for infections and there’s nothing. Anyone else having this?