(My) Life is full of dilemmas

I was asked by my manager if I wanna go offshore, on board a vessel in Vietnam...

17th Jul to 31st Jul... 2 weeks. I gotta know a lady from the HSE dept, and when I told her bout it, she said "Wah, u very brave leh."

Ok, I know all of u will ask me to go, I want to too, but...

1. Quite short notice for me...
   
2. S.H.E is coming to Singapore ON MY BDAY! 28TH JUL!! Ok, don't gimme the duh face. Haha
3. Of cos, spending my bday on the vessel is quite sad
4. My period

Number 4 is of cos the most impt reason why I'm in a dilemma. Although pills can be the solution, but eating pills for a long period is not good for the body... I can't imagine if I were to go offshore quite often, then I've to take pills often too! And not to mention I've to eat 1 everyday... Sometimes I just wish I'm a man. Argh...

Should I flip a coin? Or shld I just say yes? I think I'll settle with askin my manager who else is going, then decide.