Hi, a lump has just appeared on the top left side of my forehead and is approx 1.5 inches in size, skin colour (not red) and not itchy or tender, quite firm. I wasn't bitten and it is a big lump, sticking out like I hit my head really hard (which I didn't). My left side of my face feels slightly tingly around my eyes and cheek (like hay fever sensation). Do you think it is a cyst? Thank you.