Took paternity leave and now my boss is acting weird about it

Had our third kid in March and took the full 12 weeks. Came back last week and suddenly I'm not being included in meetings I was in before, got pulled off a project that was supposed to be mine, and my boss keeps making comments about 'getting back up to speed.' I did my job. I took unpaid leave. Why does everyone act like I went on vacation? My wife had to deal with way more physical recovery but somehow it's my career that's being questioned. Just needed to vent.