My Story As A Medium

Recently I have been having premonitions, and have been in contact with spirits more than ever. I used to only (mostly) sense my brother, uncle, and grandfather who have passed. But a few days ago that all changed. I was walking home from school, then I hear someone run up to me, I felt someone next to me, but when I looked, nobody was there! But I saw a teenager next to me. I just knew what he looked like, and that it was a guy my age. Then, that night, I had a dream about him. I was standing in my bathtub (fully clothed) and I saw a teenage boy staring at me from where the door is. He had brown eyes, brown hair, and was wearing blue jeans, and a black jacket. Just like the boy I saw! The day after I had the dream, I was in my bathroom brushing my teeth, then I feel someone standing right in back of me! I wasn't freaked out like I usually am when I encounter spirits, especially that close. I don't think he is harmful, he seems kind. I have been asking friends if anyone in their family has died, but I haven't found out who he really is. For some reason, I think his name is Matthew. But goes by Matt. It's just a hunch I have. I have told my parents about my abilities, I don't think they take me seriously. The only reason they listen is because they know it if they told me they didn't believe me I would go on about why I'm not crazy. Also, it seems like the older I get the more of seeing spirits happen, and the more abilities I have. Another thing that I seem to have, is an ability to guess certain things about a person. But the easiest thing to guess is about death in persons family. I can even guess how they died, cloths they were wearing, or just weird little details about the persons death. Is that a normal ability psychics have? I need some advice on how to deal with being a medium. Especially emotionally. Any advice on how to develop my ability further? Thank you for reading and helping!