I have had a hard zit like lump on my head for about 6months now (no other symptoms) and now another has popped up by my forehead to the left Ideas?

Yes. See your doc or a dermatologist. Too general to answer in 400 spaces w/o examining you up close.
ONE possibility. is a sebaceous cyst. Please have your doctor look at it. If it is, it can either be lived w/or removed easily. Peace and good health. These are common on head, neck, and shoulders.