Nerve damage and stinging after removing a lipoma in forehead?

I had a small lipoma, about an inch wide, removed from the left side of my forehead. After the surgery there was a large swelling, about the size of half a golf ball. I got bruised and looked terrible for a couple of weeks. But what worries me more is that there is severe numbness and stinging on the top of my head and my scalp, above the scar. Even worse, I cannot lift my eyebrow more than a few millimeters. Will I recover from this and how long does it take? And will the stinging go away?