Tongue

I have 4 small white raised bumps on the back of my tongue, and very small reddish ones towards tha back and middle. They dont irritate me or hurt, but they are kinda hard. I have rinsed w/ warm salt and water and have also used mouth wash. I noticed this about 2 days ago after burning my tongue with hot food. Ive done that before and I have never noticed anything like this. I am pregnant and I'm kinda scared. Do you know what this maybe?

[Jerome Tsang, DDS]

They are probably circumvallate papillae.  Look it up on the internet to see if it describes what you see.  If you are in doubt, you should probably have it checked out by a doctor.