When I brushed my teeth this morning I noticed I had a few small red spots on my tongue. What should I do?

Geographic tongue. Take a look at this link: http://bit.ly/1ByTX6J I bet, without seeing you, that you have something like this, a not serious condition which will resolve on its own. If it doesn't go away, however, you may want to see a doctor.

Related Questions

After I brushed my teeth I noticed some red spots around my canine on my upper and lower gums. What can it be? It doesn't hurt & it's not swollen.

Abrasion . It could be an abrasion from either a new sharp bristled tooth brush or using a highly abrasive tooth past.Agressive brushing also add to that. Read more...
See your dentist. See your dentist and let them evaluate the problem. It could be periodontal disease which many times is "silent" and the patient is unaware of the problem. The dentist should be able to diagnose it. Read more...