Any suggestions??

I am 21 yrs old and i enjoy 1 child..i had him at the age of 18 and i gain alot of weight..i go from a 3 to a size 12..but now i am hindmost at the size 3..i wants to gain bulk..i loose weight immensely quick but i want to know are here any suggestions for things i could take to gain cargo? Thanks high hefty diet and birth control its cheap in clinics and it will abet your body in several ways most people gain some solidity with it..drink a lot of meat try to aviod sugars because they are difficult on your body but milks good complete milk
eat more and exercise regularly to build up muscle.. if not consult a doctor...