Hello Doctor ,i Am Kalapna, I Am Not Getting Periods

hello doctor ,i am kalapna, i am not getting periods regularly and we are planing to concevie.My doctor suggested me Duphaston 10mg for 5days,after using this am got my period but am not concevie..i did some test in that i have PCOS so she suggested Normoz tablet for 3months along with folvite tablet till get pergnent.after am using this Normoz tablet i am not get periods regularly..please help me how can i get proper periods regularly.