How do I get my regular voice back after having been sick?

Okay, so I was sick and my cold has gone away since yesterday but my voice still sounds kind of nasally. I don't mean raspy, just nasally and congested. I don't like the way colds make my voice sound (I sound orange) and it makes it embarrassing for me to talk in class and stuff. And the odd thing is that for me it takes forever to get my voice back, like up to 2 weeks after the cold untiI I see improvement but for everyone else, it seems to go away quickly. But is there anything that I can do about this, you know to speed up the process and make it go away more quickly? Or do I just have to wait it out?