Thanks for the query.
Yes, better to take contraceptive pills
along with metformin
Metformin helps as insulin sensitizer.
Whereas contraceptive pills will help in regularization of the hormonal
levels, there by they will help in regularization of the cycles, deceasing dysmenorrhea
You have to take these pills at-least for three months to get desired effect.
For more details you can ask me through: http://www.healthcaremagic.com/doctors/dr-sree-gouri-sr/63429