Civic,Car smoking under hood and spraying antifreeze everywhere, but not overheating

I have a question regarding my 2004 automatic Honda Civic. It was overheating so I brought it to a mechanic. He concluded the fan on the radiator was broke and had to be replaced which is why the car was overheating. He fixed it and I got it back. Since I got it back, there is a lot of white smoke coming out from under the hood now and antifreeze spraying EVERYWHERE out the front grille of my car and even spraying onto my windshield every time while I'm driving — but the temperature gauge doesn't show it is overheating. My mechanic said it was normal to do that for a couple days becau