Start wriggling those baby teeth!! It's not all that uncommon for the permanent teeth to come through before the baby teeth have fallen out, but it can result in the permanent teeth being displaced or to erupt in the wrong position. Once you have a couple of teeth in the wrong place you will find that more teeth come through incorrectly positioned... and you will end up with an expensive orthodontic bill in a few years!

So, wriggle the baby teeth and try to get them out (encourage your DS to do it himself). If they are not budging, you may need your dentist to extract them. Extraction of baby teeth is usually pretty quick and simple as they don't have big long roots, but *most* kids would rather pull them out themselves! Good luck, I hope the tooth fairy visits your place soon!