Hen party... any way to avoid period?!

Yup I know its stupid question for a 27yr old but ive got my hen party on Sunday, my period is due on monday or thuesday (depends on cycle length).. BUT, I feel like this which is alreasy behind the corner and will attack any minute 🤮 its 4 or 5 days ahead and I feel my stomach and breast like it was already in.

Im ttc and would of course not want to take any birth control but also if I did, do u all think it could work this late? Do you have any idea what I could do? I was hoping for one of the best nights and am so worried now... can u help me out please ? 💞

EDIT: Hen party is the same as bridal shower/bachelorette :)