Schwarma

I'm going on vacation next week with my boyfriend (we're leaving on Thursday) and we haven't had sex yet. I want to on this trip, and it'll just plain be weird if we don't.

But my period is late. I had it when I came home from school (May 15th to May 20th) and expected it again last weekend. I assume the change in surroundings influenced my cycle (my friends aren't around to help regulate with their cycles).

Is there a way I can induce it??
I've tried: parsley tea; parsley and ginger tea; extra vitamin c; and sniffing boys (for the pheromones)

Please offer any suggestions you have- I'm desperate.

Also, I jog 2 or 3 miles 4 times a week, eat in a relatively healthy way, and have never been on birth control. I do have a supply of ortho tri cyclen lo to start on when my period finally comes. Maybe there is a way to use it to induce the period to come earlier?

Thanks! Please help!