16 pounds is a lot. It's 16 pounds that you no longer have to worry about losing.
I have gained 18 pounds so far. I know some that don't gain that much the entire time. I just hope that I don't gain as much as I did with E or H. It was about 40 something pounds.
I still had 9 pounds to lose from H when I found out I was pregnant. So now I actually have 29 pounds to lose so far to get back to the weight I was at before.