Is It Safe To Take 3 Tablets Of Regestrone Per Day For 3 Days As Prescribed, Given That I Haven T Had My Period After 8 Days?

Good evening It s been 2 months I didn t get my periods. I was suggested to use regestrone 5mg 2tablets at night for 5 days. It s been 8 days since my last dosage. Still I did not get my periods. My doctor suggested me to take 3 tablets per day for 3 days . Can i take the tablet again?Do it cause any overdose