Overweight & pregnant

I'm larger this time around then last. By about 30 pounds and my midwife kind of make it seem like I shouldn't have gotten pregnant being so large (I'm 5 weeks pregnant). I'm 5'7 and weigh 187. She made it seem like I'd have a very unhealthy pregnancy and end up obese. Has anyone been slightly bigger and had healthy babies? I'm feeling a bit down and stressed :[