argh late period

Hi guys, need some real advice. My period was due 5 days ago and it hasn’t come. I’ve got an away week with my boyfriend next week. I’m worried that I’ll end up starting my period to close to the time. I don’t know how to now delay it further than next week or speed it up in the next 2 days as my period tends to last between 5 and 7 days. Any tips or advice? I’d really appreciate it, as I’m stressing out 😭