Ac was working great until last night,the fan has stopepd coming on,and itsgettin hot,is it the fan or something else causing this

Well, our crystal ball is currently down. Your question is very generic so without any other information, you may have: bad thermostat, no power to unit, broken wire to contactor, bad compressor, bad motor, low Freon etc. Maybe with a little more info we can help you better.