Weight Gain

Unknown

I am currently 17 weeks 3 days, and I have gained 17 lbs so far - this is my first pregnancy. I was fairly petite my whole life, 5'4" about 115 lbs on average pre-pregnancy. My doctor doesn't seem to be concerned, but I feel like 17 lbs so far is a little excessive! I am eating healthily, I try to balance it out because I'm hungry every two to three hours... and yes I do have some uncontrollable cravings for ice cream & sweets, but don't we all Should I be worried at all or just let it be?