Suggest Treatment For Severe Headache

Hi, I am going to be 14 in a month, anyways I recently have been suffering real bad headaches if you can even call it that. But today when I woke up I was having a hard time remember, not like I was forgetting, but more like I had it in my mind but I couldn't speak it. I also realized is today, I was stuttering not with everything I said but I did sutter a lot. What should I do?