What does one do to heal a broken foot?

I have not been to the doctor over this, but have had severe pain in the top of my foot...in the boniest part. The pain often radiates to the bottom of my foot, especially when I angle it or bend my toes. I don't remember injuring it, but something is obviously wrong. I have bought some shoes with good support and keep the laces somewhat tight. Besides this, should I do anything to hasten healing? Even if it is broken...I would probably only get a "boot", right?