What Causes Stomach Ache And Bloating After Childbirth?

I DELIVERED A BABY 11/16/14 MY STOMACH WENT DOWN SINCE AND JUST HAD A LITTLE PUDGE. ON 01/06/15 I HAD GAS PAINS IN MY STOMACH THAT LASTED 4 HOURS AND THE FOLLOWING DAY I LOOKED BLOATED AND I STILL AM BLOATED TODAY. I HAVE BEEN HAVING RANDOM PAINS IN MY STOMACH SINCE BUT THEY DONT LAST LONG SOMETIMES ALMOST LIKE A PULSING