Help!!! Please! small bumps

Hi,
I had this happen to me last year but i don't know what caused it!
I woke up one day and had little small red bumps on my chest !! It scared me when i noticed it! I have a few around the upper part of my back, but not as much as the front of my chest.
I don't know what to do. I tried to think of what I ate, but I just don't know what could have caused it!
It doesn't itch, but they are quite sensitive when i touch them sometimes
It has gotten a bit better.. it's been like the 2nd day, but still it looks very scary on my body!
Please help!

[kurby]

have you seen a demotoligest