Cylinder heads and valves

I recently did a head gasket replacement on this vehicle. Everything seemed to work out fine until I heard a gurgling sound and also saw some steam coming from where I put the oil. In other words the oil canal. At first I thought it was another blown head gasket problem because I could see a yellowish creamy color around the oil cap. But I noticed I had no white smoke from exhaust and the cars temperature was staying steady. I am dumbfounded looking for help. Never ran into this kind of problem before. Could my head cylinder and or camshaft cause this?