What Should I Do About Absent Periods For 5 Years Despite M2 Tone Tablets

I have had absent periods for 5 years now, the doctor prescribed M2 Tone tablets to resume my periods which I took for 3 months. I have not yet seen my periods even after taking M2 Tone tablets and it s been 3 months since I finished the drugs. How would you help me, I really need my periods back.