What Is The Best Treatment To Get Pregnant?

i am hony from pakistan.i am married since 2 years.but i am not conciving.my all blood reprts and ultrasounds are clear. i had taken medicine cerophene from 2nd day of my period and then had ultrasound for follicle maturity and that report was good..but i did not get injected on that day.know dr advice me to take duphstan..and have that process again by taking cerophane and ultrasound ..now tell me should i take duphastan..what it is for