What Should I Do If I Haven’t Gotten My Period After Taking Sysron N For 4 Days Following PCOD Treatment?

Hello Doctor, I m diagnosed with pcod on Oct 17th.my last period was Oct 15..thn I started dronis 30 on Oct 29..I took for 21 days. 5 days after I had sex with my boyfriend..started with unprotected. After that we used condom..i had 2 days spotting after that. I don t get my periods after 7 days. I waited for 20 days. So again consult my doctor.. She prescribed sysron n. She said within 2 to 3 days periods wil resume. Today is my 4th day.. I can t get my periods.. Wht can I do