weight worries...

Im 6 weeks and so hungry ive already gained 2 pound. I read shoukd only be 4 in first trimester and at this rate its going to be about 8! I got huge with my last and i did loose the weight eventualy but im heavier at start this time and id rather not work so hard to get it of after :s im currently charging my fit bit and going to go walking more. How does eveyone else feel about weight gain?