Is It Safe To Have Femilon While Having Indigestion Problem?

sir i am 23 year old unmarried girl.femilon is prescribed by lady doctor to delay period.my cycle is supposed to be on 8th or 9th march i have exam frm 10th to 15th. march is it safe to take femilon,my haemoglobin is 11.5 and having breathing problem and gastro problem like indigestion and vomitting. having a minor calculus in left kidney. sir i just dont want my date between 9th to 15th. should i start femilon frm tomm,continue taking it 21 days or start it frm 4th or 5th and continue to take it till 15th. pls advise me as i am in tension as i read the pamlet femilon has side effects