Confused

I'm not sure what's going on may be it's just because I'm in my late 30s? So my last period was nov23 and then spotted early dec.and no other period since .so glow keeps saying I should get it but nothing for at least 4 wks. Took test neg. But my stomach cramp a little likes it's coming but no af? ? Think I could b still pergo or not. Just feel weird too?????