Woe is me!!

I'm back without transportation again. They put my new motor in and finished up with it on Thursday. I drove it to Lufkin and Nacogdoches on Friday, Nacogdoches on Saturday and again to Nacogdoches on Sunday. I was driving to my sub meeting today at 1:30pm and the "Service Engine Soon" light came on and stayed. I called Doug and he said to come by the shop on my way home. He checked it out and the computer said it was the catylic converter. Well he reset the light and it stayed out for about a minute and came back home. I drove it home. After Doug and Kayla got home, Kayla and I drove to Dad's house. After staying there about 30 minutes we got ready to leave. I went out and the truck acted like it didn't want to start but did. I started to drive home and steam started coming out of the exhaust. I called Doug and he told me NOT to drive it. He said it sounded like a busted head gasket. So he came and towed the truck to the shop. He parked it out on the road to unload it and then he drove it up to the shop. But as he tried to start it - it made a clanging noise. He said that the motor was trying to seize up. I am not having good luck with vehicles.