Pregnant? Or sick?

Hi if anyone has had a similar experience please lmk or maybe I’m being crazy. I’m 45 days late on my period haven’t had one since Aug 2 it’s Oct 31st and I have weird symptoms, heartburn, dizziness, some nausea, cravings, mood swings, bloating, back ache, sensitivity to caffeine when in general ive never had that, fatigued, random body soreness, constipation, and still NO period I took a digital test last week and it was negative, but has anyone had this before and it be something else??? Or can there be a false negative if there’s not enough hcg in my urine shoukd I do a blood test ??