Could i be pregnant or am i over thinking?

Kembly

I’ve had irregular periods before like my period has skipped a month before so idk if i could be over reacting. I had sex with a condom a couple weeks ago and i’m 12 days late for my period 😿 This month ends tomorrow and my last period was in November. My uterus has also been cramping these past couple of days and today my discharge had red in it. I took a test a week after i had sex because i was too anxious to wait till after i missed my period & it came out negative so i was chillin but now i getting worried. I can’t take another test because i’m on vacation with my family and don’t want to seem suspicious. What could this mean?