Feeling so bad about weight gain...

So I started my pregnancy having gained about 10 lbs from my normal weight. I'm usually pretty active and watch what I eat, and even then my weight puts me smack in the middle of what's considered the healthy Bmi range - I never can get to the lower end of the range no matter what I do. So when I got pregnant I was right at the top of my healthy range where a few more pounds would've put me at overweight. I was depressed from TTC and just not exercising and the result was the weight gain.