1999 DODGE GRAND CARAVAN radiator?

I turned off the car and the radiator fan kept going. I had to drive the next day and the battery was dead. I jumpstarted it and went to work, samething. I stopped and the fan kept going. I had to take the fuse out. I did that twice and that same night I got home from work and it stopped finally when I shut off the car. When I drove it later on, the temperature went up and got really hot. I dont think the fan is turning on anymore and now the car is overheating. I'm a little over the miles on my next oil change, so I dont know if that matters. I was planning on doing it on Sunday. What should I do?