It’s only going to “screw” your GPA as much as the effect of one F has on your overall GPA. That’s what? 3 credits out of approx 120 credits required for your degree. Negligible impact, but not zero impact.
It is what it is. You can’t change it now.
As for your chances for a med school admission. No, adcomms are not going to see a F in community college Spanish and think “total loser” and reject you. Your application will be evaluate holistically and within the context of the rest of your app.