I was let go in 2012, at that time they cut about 250 folks - it was about 15% of the total workforce at the moment. Now I hear that WebMD may have layoffs in 2017 as well. I am not sure what'll happen and how good or bad WebMD's current business is, I can tell you though that you will be just fine and that you'll find something that's fulfilling and rewarding.
Whatever happens - YOU WILL BE FINE