My name is Tom. I am a 16 year old boy. I am the smallest in my class, with long brown hair, and very thin. Some think I am a girl when they see me from behind.

Today I was sitting in class when I felt a pain in my chest. I asked the math teacher: “Miss Jones, can I go to the bathroom?” She said yes.

I ran to the bathroom but it wasn't easy because of the pain. Once inside I entered a booth, sat on the toilet and took off my t-shirt. When I looked down at my chest I saw my nipples were hard and the skin around them was swollen.