(((((rain))))) hearing your child cry is the worst sound in the world. My son went through a period like that, I do not recall exactly what age, but the dr called it a venting period. He'd cry no matter what we did for 20ish minutes. I just rocked him and cried along with him. Luckily that stage didn't last long.

If your concerned about his intake, use a breast pump. But as I recall, they have to work harder to get milk from a bottle than the nipple so they really don't like it.