I would talk to a counselor if it embarrasses you? Dreams and sexual desires are not something to be embarrassed about. I would imagine you dream so much about being spanked because you do not "like" allow the thought of that and/or see where it goes. It's like an infection to you and you have ugly stuff building up behind it. I'm not saying you should act on it, I believe you need to discuss it though with someone so you know where it's coming from, what it "means" to you, etc. You can't "will" it out of your consciousness.