What Are The Repercussions Of Missing Few Dosages Of Susten?

Hi I took susten200 twice daily for 14 days as suggested by my doctor from day14 onwards but I missed few days and I took them for 18days.now I dint get my period. Do any cysts r formed ? I m getting tension. Is by susten200 medicine delay causes period skips and cyst formation.I tested home pregnancy test today and I got negative result.i m so worried.plz answer me doctors.