Can you tell me if it's colic or not? The baby doesn't want to breastf…

Can you tell me if it's colic or not? The baby doesn't want to breastfeed, he pushes his body and tries to cry hard, he gets really red and can't poop, he gets angry and cries, and then again, all during feeding. Why does this start happening? I don't know how to help, I can't watch him like that ?