baby poop 💩

Maia
So I'm a ftm starting to get a little worried...my 7 week old hasn't pooped in 6 days now. Last week he went 4 days without pooping and had a blowout when he did. He's exclusively breastfeeding. I read they can go up to 2 weeks without pooping but he gets really fussy when he tries to fart or anything so I don't know. 
Help