Aih, pantang lah tu normally, 5 weeks postpartum perut memang akan kembung and gassy especially malam time, especially if you're passing wind a lot. A few of us noticed it lasted a good few weeks after delivery, tapi kalau the pain is quite bad or you're worried, better check with your doctor just to be safe lah, sebab recovery everyone's different and they can give you proper advice based on your situation.