Norethisterone to delay periods.... has anyone taken this?

Hi everyone.

I'm about to undertake a long distance trek and we are wild camping in the middle of nowhere. My period is due three days in to the trek! And I have seriously heavy periods.

I have purchased Norethisterone in order to delay my period. One tablet, three times a day.

However, I am worrying about side affects. My breasts are already really sore and my period isn't due for a week. And I haven't started taking them yet.

Does anyone have any positive stories to tell me about taking these tablets please? Or any advice on side affects?

Many thanks in advance 😃