If it's what you really want, do it. If you're not sure what you want, think about it, do some shadowing of different professions, and then decide. We don't know what the job market will look like in 2019; it could be great or terrible, or somewhere in between.
The one thing you can control is whether you are going to study something you think you'll enjoy. If you graduated from pharmacy school and the pharmacy jobs didn't pay as much as before, would you still be interested? If so, then go ahead and study pharmacy! If not, start rethinking your plan.
EDIT: Don't ever do something because everybody else tells you it's a great idea. That's why the US is in this mortgage mess in the first place. Lots of people believed lies like "housing never goes down in value!," which is, objectively, untrue. Think of your schooling the same way. Anything "guaranteed" as a sure bet probably isn't. Do your own due diligence, which includes being skeptical of the job market. It's ok (and actually good) to worry, but don't let it eat you alive.