Most Helpful Girl
It's most definitely uncommon.
However, this leads me to believe that you are very shy and scared to come out of your shell.
You should work on those things about yourself.
Before you know it, you'll be thirty years old with no experience.
(This will be worse assuming at some point in your life you want marriage and children).
Life doesn't wait until you are ready to make a move.
You have to be bold enough to do so, only then will you see improvements (and work towards change).
Try dressing up, and going out more.
Smile, greet others, initiate conversation to show others you are approachable.0