M4 had an uneventful trip to the doctor. He's meeting all of his milestones and looks like a healthy, happy guy. The doctor had a med student give the exam independently and then the doctor came in and basically examined him again, so I'm glad we didn't have any issues that we'd have to discuss twice.
M4 is now 21 lbs, 6 oz, which is about the 95th percentile. He gained 2 pounds in the last 2 months.
He's 27.5 inches, up 2 inches. He moved from the 64th to the 81st percentile for length. We all figured that would happen - he looks like he changed proportions in the last month or so.
He had another dose of Pediarix (DTaP, HepB, and IPV) and Hib. I need to look into what else he needs to start receiving. We switched pediatricians between M3's birth and and M4's and he's very hands off about things like when we give vaccines. A big, big change from M.G.'s pediatrician who followed the CDC recommendations or would know the reason why (and disagree).