I'm certianly far from an expert, but 4 ounces really isn't too much weight gain for 35 weeks. Also, if she is acting fine, eating fine and sleeping fine, I wouldn't worry about it. Call your vet & get his/her feedback, but I'll bet she's ok. Maybe it's like us humans. . . I only gained 14 pounds with my first child, 20 with my second, and 25 with my third!