Ophelia my baby! Don't cry in advance!

Your first step is to go in the car wash as I told you. If the guy there says "no", and there's a possibility for this, you will need to go in the repair shop. This is the plan "B".
These types of spots are highly corrosive. They possess acid components that destroy the car painting and in the place where they fall down, open a hole!
So, in the repair shop, the dude will analyze the situation. He will see the spots and if can revome them off using a clean machine.
The last option my honey and the more expensive is to sandpaper the spotted parts to paint them again. But this only in last case.