is my baby too big?!

So I went for my 30 week ultrasound today and the Dr told me my baby weighs 3pounds 9ounces. He said that's normal weight for my baby I thought it was too high considering I still have 10 weeks to go! when I went home and did some searching around  all my results have lead to my baby being "too big" I'm so worried bc I've been eating right and exercising daily... I dot wanna have a huge baby