Hiya :) I was nineteen when I lost my virginity. I chose to wait until I met a man I loved and trusted. As ruffledsheets says, there really isn't a correct age to lose your virginity. I think you have to be mentally ready as well as physically ready, plus be in a situation that allows you comfort of mind! That can take a long time to happen - far longer than your teenage years, and often far longer than society tends to push you towards thinking.
Don't think of it as a social pressure, or a need to conform. I found it very easy to find myself unattractive and unlikeable because I hadn't the experiences other people of my age had. However, I now feel better off for waiting until I was happy.
To be honest - being a virgin just makes you more special and interesting! You can never get that 'purity' back after all!