I know lots of size 14 women who are far from a "plus size". A Plus size is size 16 or more likely size 18 upwards. I know women of all heights that are a size 14 and have no fat on them at all. Whereas I also know women who are a size 12 and are really quite skinny with bones showing and no flesh.
We should learn to accept ourselves for what we are in our body size as well as the shape of it and our height. The only thing that is sensible to do is to keep within the healthy limits for our height.