Could these be pregnancy symptoms???!

SOS! So I had protected sex (condom) on dec 14, it is dec 26 and I have vomited 6 times, I have diarrhea and feel like crap. I am on a family trip on the us and have no way to get a preg test without them noticing. They can’t notice bc I’m 16 and they’d kill me. I am feeling better now but I felt dizzy earlier. Could this just be an intoxication or could I be pregnant ??!!!!