My question is whether it is possible to somehow make your period come sooner or postpone it for a later day? Basically, I'm always 1-2 weeks late. I was supposed to get my peroid last sunday but as usual, its not here yet. The problem is that I'm leaving on vacation in 10 days and I would do anything to avoid getting it that week. Is there anything I could do to make it come within the next few days or if not, then skip it this month?? If anyone has any information about this, please let me know. Thank you.

Nope. You would have to have been on birth control pills to do that.