Head Gasket?

I bought my 2000 Jeep Wrangler two weeks ago from a mechanic that claimed to have rebuilt the engine with new pistons, head gasket, new transmission, clutch etc. Yesterday the hose popped off the radiator but I didn't realize it until I started feeling faint from breathing in coolant. By the time I pulled over the entire system had drained. I replaced the hose clamp and correctly refilled my coolant, but as soon as I replace the radiator cap pressure it creates more violent air bubbles in the system. (I also noticed oil like sludge near the opening but this may have been from dirty hands when someone was working on it?)
My thoughts are that my head gasket is blown. Has anyone had similar issues?
My boyfriend has replaced his head gasket twice before so I'm curious if we should skip the shop and do it at home or should I have the entire thing checked and tuned up?
Any advice would help
Thanks

 

Remember, after a hot drain like you experienced, the system will need to clear more air pockets in the cooling system than a cold drain. May not be your issue but something to consider before pulling the head is just "burping" it well.

A tiny amount of oil just after a rebuild is not a big thing to me...but if it keeps getting worse then worry. Look for water in the oil, oil in the water, fuel in the oil or water.

Assuming the straight 6 engine (you don't say)...the head gasket is not something I would consider hard for a decent mechanic. However, if you got it really hot when it drained you could have cracked the head or block. Not a pretty thought.

Good luck with it Deena.