Help please.. Flushed heater core and radiator now no heat and overflow bubbling

[918hatch]

Like the title says.. I flushed heater core and radiator and now my overflow bubbles and now the Durango goes over 210.. The heat blows cold now but did blow a little warm but was still over all cold before. Did my water pump go out? The Durango never did over heat. The overflow did start to bubble as boiling and not air in the system.

Any ideas?

[Moon29]

what year durango

[Moon29]

check your thermostat and make sure its not stuck open.