Weight is Climbing!!!

My weight keep going up.  I am not exercising enough.  Eating to much as well.  Sometimes, it goes down quickly.  I know it is the msg in the food I consumed.  MSG cause me to feel very thirsty and I will drink lots and wake up in the middle of night to pee.  By morning, I will have lost 1kg!!.  This mean I drank more than what my body really needs and has to expel  the liquid through the night instead of in the morning.