Q: Possibly blown head gasket

Hi I have a 96 acura integra. I bought it used 3 weeks ago. Hv had no problems til I drove 4 hours to visit family. Halfway here I had stopped at a red light and noticed the temp gauge rising up to the halfway point and I panicked. I managed to immediately get it pulled over. I tried to start it a few times while sitting and temp gauge was still trying to go past halfway mark. I ended up sitting for an hour wtg on hwy patrol assistance which never showed. I started the car and the temp gauge went bk to normal and I made the rest of the drive fine. I took it to a mechanic who SD the car was out of oil and water. I just had oil put in b4 the trip. He wrks on transmissions and SD he thought the head was cracked. Any ideas here???? Just wondering if it really cd b a blown head gasket....should I scrap the car? If thts true what kind of money are we looking at??