Hi, I'm a 30 year old female, I had my last period on 28 of december, my periods have been irregular for last 5-6 months due to a lot of physical and mental stress. This is a record of my last five months periods ( Aug 28, Sep 28, Oct 18, Nov 14, Dec 04 and Dec 28). Since I'm on a holiday from 22 to 26 Jan, I either want my periods to be prepone or postpone by taking Primolute N, but due to irregularity I'm unable to decide the due date for my cycle and on when to start taking the medicine and how many dosage. Also want to know if it is safe to take these tablets. Kindly suggest. Thank You.