2000 Plymouth Neon (78k) overheated lst night....What problems will I have, if any? Is it safe to drive?

Yesterday I was driving and the car overheated. I stopped and noticed that it had no antifreeze. Since I had none, I added water and went on my way. The car felt like it was about to die at any moment. Luckily I managed to drive about 5 more minutes, parked it and then it died. The engine light came on too. A friend filled it up with water and let it cool down. Today, the temp is back to normal and the check engine light is off. What problems will my car have? I felt that I may have forced the engine cause I drove it for 5 more minutes until it turned off. While driving it today I felt that something is rattling or shaking. What should I do? I changed the oil today and added more coolant. Is it safe to drive? I'm scared that it will shut down on me while on the road.