Hi, my period is due to start on the 22nd. would i start taking my primolut nor 5mg tablets today in order to delay my period?

Primolut nor: appears to be a synthetic progesterone not widely used in the US but available in Europe. It is used for treatment of irregular menstrual bleeding/dysfunctional uterine bleeding. It can be used to delay menses, but directions suggest it be taken 3 days prior to expected menses and taken for 10-14 days. I don't know what day you wrote this but if later than the 19th, it probably won't work.