Yes, eventually. If you started wearing sports bras at the start of your breast growth, and slept in them at night, then, by now, your breasts should be lower than usual. The same applies for at least a year or so of wearing sports bras (again sleeping in them. Now, they're okay for sports, but you should always take them off at night and as soon as you finish the sport.
Also, how large, or small, and 'high' your breasts will be depends on your genetics. Even if you've gained a few extra pounds, your breasts will still be, usually, like everyone else's in your family.