I'm scared I'll have white spots on my teeth after I get my braces off?

I've had them on for 2 1/2 years now, and I'm probably getting them off in a couple months. The problem is that I'm guilty of not exactly being the best when it comes to dental hygiene. I only brush my teeth once a day, and sometimes I accidently skip a day or two. Will I have white spots on my teeth? How can I get rid of them?