Ugh someone help me😓

I had sex the 31st-2nd on a trip see in my boyfriend. My period was due the 7th and never came. I have taken pregnancy tests and all negative. I have slight cramps but nothing crazy no sign of my period coming. Is it possible to get a false negative? What should I do cause my body just doesn't feel right and I don't know what to do. Please don't judge I'm also 17 will be 18 in October.