Check your coolant level in the radiator and the overflow container. If the overflow container is empty, chances are you don't have enough fluid in the radiator. Poor between 1-2 qts of 50/50 in the overflow container if it's empty. Add 50/50 to the radiator as needed.
Check your hoses. Make sure non of them have collapsed. If they have, your water pump has failed.
If non of your hoses are collapsed, replace your thermostat. It's possible that it might be stuck in the closed position. It's easy to replace. I composed a write-up over on YotaTech.