I would start with putting a pcv valve in asap. Next, check the back of the intake manifold and valve cover gaskets for oil leaks. Both of my valve cover gaskets and intake manifold gaskets were bad and leaked so much oil I thought it was a rear main seal at first. Then check your timing.
If it's not blowing smoke or leaking antifreeze from the tail pipes it's hard to say the head gasket is bad. Also, check to make sure all of your vacuum lines are A. in good shape, and B. hooked up.