I am 27yr old and have one and half month cycle my doctor suggest me prolifin 50mg from 2nd day(1 at night) to 5th day(2 at night) with folic acid 5mg three times a day. before this i am taking dyphastan 2 a day for 9 days before my period and with this i have 7only 7 days delay in my period otherwise it is 15 days after on month. She also suggest days for intercourse but I am confused it will work or not?. My weight is 72kg can it be a problem?