Period symptoms or pregnant?

I’m getting lower abd cramping and moderate white discharge for the past couple of days. Had an episode of dizziness and fatigue while at work but I work night shift. According to glow Im supposed to have my period already. Download glow three months ago. I’m irregular so its hard to say when. I work in the hospital and tested myself using our hcg test multiple times and it was negative. Is it just paranoia? Or any recommendations? Side note: we’re not trying nor are we preventing. No birth control or protection. Thanks :)