Stress Delaying Your Period

This might be a stupid question, but I know stress can delay your period, but what do you mean by stress? My period is due in 2 days, and I NEED it to come the exact day it's due because I'm going to a camp for a week, and I'm leaving the day my period is supposed to end. I really don't want to be on it at camp, because last year, it started right as we were leaving. Now mind you I live in Ohio and the camp is in Georgia. So for 13 hours I sat there bleeding because I didn't really know anyone well enough to openly ask for a pad😂 but anyway, my period came a week early last month, but I think it's because I normally don't have 40 days between periods like I thought I did, so A) do you think it will be on time, and B) how much stress will delay it because I'm tying not to think about it but deep down I really need it to be here on time. Thank you!