I agree, don't feel bad. Comparisons are so horrible. In high school my smallest size was a size 10, almost. In my group of friends everyone was a size 2 and 4 so I felt so huge constantly and hated myself.
Now that I'm out and went up to a 22, and am now down to a 12-14, I feel svelte and can see it was more the comparison (with people of different body compositions as well) that made me upset than that I was as heavy as I thought I was.
I think your family was unfair to talk so much about it, but like the PP said, you are in the midst of your journey and soon you will be noticed also.
I hope your new year goes much better.