Hi I read about taking Norethisterone to prevent your period happening during a holiday. However its a synthetic progestin. I have had negative side effect from taking another synthetic progestin, the depo-provera injection. I only had the depo injection once and my doctor told me it would stop or minimise my periods, but for me it actually made me have a constant period for the whole 3 months. I never went back for another injection due to the side effects . Now I know that the depo-provera works great for lots of people, does anyone know why it didn't work for me? Has anyone had a similar experience with the depo- provers and also does anyone knows whether the Norethisterone is likely to have the same effect on me as the injection with it being a similar ingredient as I was hoping with it being a lower dose over a shorter timeframe that it may work ok for me? Also if I was to go for it and take the norethisterone for the days ahead of my period being due and noticed bad side effects straight away would it be possible to just stop taking them and what would happen if I did? I am of course going to contact my doctor over the next week but was hoping someone out there may have had a similar experience as I would love if I didn't have to have my period to worry about on our first family holiday. Thanks