Is it possible?

Hey y'all! So I thought I was pregnant last month (nausea, cravings, vomitting, fatigue) and then I had my period (5 days lighter than usual but not heavy) than I had spotting a week later and than another (what I thought was a period light but 7 days). Today I started feeling sick again, my stomach muscles have tightened, and I'm super emotional. Is it possible that I'm pregnant or am I just imagining this?