head gasket

I think i have blown a head gasket, on a 25-30 mile drive to where i work my cart started getting really hot and i was wondering what was going on cuz i just put in a new radiator, a summit one and it has been working perfectly but when i stopped i saw smoke and i popped the hood and the smoke was comming from the oil dipstick and when i pulled that i found where my water has been going, the oil was all thin and watery with bubbles. :bang:

what do u all think, my dad is pretty sure that it is head gasket but is there any other thing it could be? and if it is a head gasket is there any type that r alot better than the rest?