Being a person who has struggled with weight gain since having children,i can only strongly advise you to NEVER EVER take diet pills,they are not good for you, i would never take any medication that i don't need to, believe me as you age things go wrong and you need to take medication that you wish you did not have to.

I can well understand how you are feeling, my last baby is 15 and i still am carrying extra weight from having her,but honestly if you start exercising,and eating healthy after the babies i am sure you will loose the excess, which is very little considering you are having twins.,it sounds like you are all babies,and very little body fat.

There is no quick fix,but taking the healthy alternative,you will get there,breast feeding had the opposite effect on me i am afraid, i was so hungry all the time i actually gained weight, after having my daughter i was only like 4kgs over my original weight, but i gained alot more in the 16mths i breast fed her,but that does not happen to everyone, usually it is the opposite, and you will be so busy with two babies, i am sure it will literally fall off you.

Good luck with the birth, i hope you will stop by again and introduce your babies to us, we just love babies and pics here on PT.