Is it lame or abnormal that I don't have friends?

Well, I’m 16 turning 17 in three months and I’ve noticed a long time ago that most people my age have a lot of friends (or at least a few) by this time in their life. The thing is, I’m a real shy person and I can be social to a certain extent but going places with people I’m not really familar with and not bringing my sister or anyone else that I know along with me makes me feel really uncomfortable. I always have the feeling people are judging me or talking about me. I don’t like going to restuarants because I have the feeling people are staring at me when I eat. My parents want me to get a job this summer but I don’t think I can handle it because of..socializing. Do you think this is abnormal behavior?