Auntie Ronda's advice:
Let Baby tell you through his behavior what he wants. Don't eat spicy foods to harm breastmilk. This could cause early colic. What you describe is mild colic.
Your calmness is going to be the ticket, Mel. Babies can really sense if tension exists. It is a learning curve for you as Alex is your firstborn, but I think if you follow your own judgment the crying will be read as a need to meet, like changing a diaper or nursing. The onding and adjustment is what you are experiencing. This will soon be old hat, and you will know in your heart what your baby needs and wants.
He is a little treasure, and such a cutiepie! Ronda