Hi i have been given these tabs 10 days supply 3 x daily should my period get heavy during my holiday. I have sometimes a light period lasting a week then 3 weeks later have a heavy period lasting 2 weeks. I was told to take on 1st day of bleed and continue for 10days. i am also on cerezette. today my period has started 1 week before my holiday. i havent taken them hoping it will have gone by next week. If it dosent and gets heavier should i take the tabs to slow it down or will they not have any effect. i wont be able to do much swimming or anything as i was at the loo every half an hour last time flooded out it was horrible.