After all dental treatments?

I had all dental treatments needed finished two weaks ago - inclusive fillings, abscess and cleaning of my teeth. Since then, i have sensitivity whether im eating/drinking cold stuff or eating/drinking hot stuff. What is this? Undoubtedly, it is because of the dental treatments especially cleaning teeth followed directly by fillings and the like. What can i do? I feel this throbbing pain after i eat for 10 minutes. Then, it vanishes. It doesnt bother me alot, but i mind it.
I dont think i need to get back to the dentist. I talked to the mouth hygienist. She believes it is normal. But it has been two weeks now. I am looking for relief.