Baby not taking breast feed normally

Shipra

Hi all. My baby is 2.5 month old and has suddenly stopped taking my milk from past 2 days. He makes faces when offered milk and moves his legs in an uncomfortable manner. What could be the reason and what should I do. Please advice. I am really worried about this. Also, I had consumed chocolate brownies last week almost everyday. Could this be a reason for him not taking feed due to gas as a result of chocolate in my diet?