oil blowing out need help

[custom R]

I have an 04 rhino and last week I went up to the country to do some hunting on vacation and used the rhino all week and it ran fine then sunday morning I tried to start it up and barley got it started it ran ok when I was putting it up in the barn but it would not idle at all so I checked the air filter and there was motor oil in the bottom and I noticed it was coming out of the breather hose and when I was trying to start it air was blowing out like the crank case was pressurized and would bleed off for a second when I let off the key. any help would be great

I was thinking maybe a head gasket ???????? I dont know