Suggest Treatment For Delay In Menstrual Cycle

Dr my period crycle is stoped now...its not the first time..before some weeks it happend to me that after 2 or 3 months it started by medicines or itself..but now its 5 months and my crycle did'nt started...i consuled with gynoclogist and she gave me conception....i have one child of 3 years and the pregnancy period is also stoped...please give me some mediciens for period cyrcle to start.THANKS