I had regular periods till last month . my last periods came on sep 4th so i expected it on oct 2nd but it didnt came even on oct 12 th . i had heavy white discharge with pain in lower abdomen . when i consulted a gynec she advised for urine preg test . it came negative in lab reports and in home test . then doc gave candid v6 to reduce white dicharge . now that white discharge has stopped and still periods didnt come . i again consulted doc . she asked me to take PRIMOLUT N for 5 days twice daily (10 no's). i completed the course on 18th morning now its 21 st still i didnt get periods .. i get pain in my lower abdomen sometimes at night not regularly .. please advise i am worried