I suppose this could be done on accident... Can you tell me what you did? Both my mother and I are good at exorcising and getting rid of demons in general. I'm sure I could find a way to help you, at least a little bit. If you don;t want to say what you did on here, feel free to message me.
Well I suppose, if you were extremely vague and a succubus was passing by at that moment. Even a love spell to bring love your way and not a certain person, you need to visualize and focus on qualities. Even if you don't think of a particular person you would visualize yourself with someone, holding hands, hugging, so on. So I doubt you did summon a succubus, it could happen I guess. Cleanse and protect. This should fix your problem. If it doesn't try something stronger, but you probably didn't summon one.
succubus are lower spirit entities who happen to be driven by lust, they will drain your lifeforce, auric energy, spirit energy, magic power and whatever else they can drain from you, they are also able to effect you in the most inappropriate of times and follow you around forming a negative enrgy field around you and once you're sucked dry, like a gold digger, they'll leave you. It is highly unlikely that you summoned one on accident, but if you feel it is there, cut and clear, protect, cleanse and then banish it.