No, my dear, there are no spells that will change your gender. I wish there were a quick fix like that; it would save many people a lot of hardship. Unfortunately magic is not the answer for this situation.
You are probably transgendered and beginning to come to terms with that. There are many, many, many people worldwide who are in your exact shoes. You are not alone.
My advice would be to learn as much as you can about living as a transgendered or trans-identified person. The internet is a wonderful resource! Surely there are many online communities that will give you information and support to help you sort it out and work through your transition. I am sure it would be helpful to connect with others around your age, maybe in your local area, who are going through exactly what you are going through. Good luck!