Ok, here's my problem, I am going on holiday on the 28th may 2011 and this is the exact day of my period. Is there anything I can do to prevent it from coming. I do not want it to ruin my holiday. Please help me.

Your period can be altered by use of some contraceptives but there are risk factors for each, so they may or may not be appropriate for you, and I don't know if you've allowed enough time for your cycle to change. Talk to your physician about it, and of course, I wouldn't do this just to move a period to different dates - another option is to just treat whatever symptoms bother you more effectively, and your doctor can help with that as well. If your period are difficult, there are treatments for that as well - it shouldn't be a nightmare for you.