We can congratulate you ? We went through colic. Although they were no…

We can congratulate you ? We went through colic. Although they were not very noticeable. Now we poop after every feeding 3-4 times, and there's also a sour smell, yellow bile with mucus. And the baby started sleeping constantly for 5-15 minutes, waking up again in 10-15 minutes. What's wrong with the baby ?? We're two months old.