Gassy/fussy 2 month old

Today has been a very strange day for little man. He will be 8 weeks old tomorrow and has never been super fussy. But today he has spit up bile twice. Once after a nap when he had an empty stomach. And once when he was done nursing. Since then which was this morning, all he wants to do is nurse and sleep. He is super fussy and uncomfortable if he isn’t nursing or sleeping. I just gave him gas drops. But any moms have advice? And chance he has developed an allergy to something I’m eating suddenly? I just feel bad for him. We are seeing the dr tomorrow.