HELP!

Hello mommies. I need help, palagi po lumulungad at sinusuka ni baby ang formula milk at breastmilk ko. We tried 2 brands na po ng formula milk pero ganon parin. Is it normal po ba? Nag weight gain naman po sya. Sabi ng pedia normal naman po kaso nakakapag worry parin po. Any advise po mommies.