Eva, you know I like you; so, please don't take this personally, and be offended.
You should not be on here starting threads like this, especially since it's something you don't want to do!
Enjoy being a 17 year old girl, and take your time.
Don't be pressured into anything you feel uncomfortable with.
There aren't normal people, everybody's different.
If you compare yourself to others, and try to do what others want, and think you should do, you will find yourself unhappy with your life.
If something is normal, and healthy, it's being happy with the decisions you make in life.
One thing women often regret in their later life, is the control they give up over their identity, in their youth.
Your thoughts, your feelings, your wants are what your boyfriend should be thinking about; if he loves you.
If he is expressing a desire to do things you don't feel comfortable with, tell him.
If he still wants to do it regardless of how you feel... find someone better!
I know youre going to be 18, and you're somewhere between a girl, and a woman.
But, the fact you don't feel good about something, is all the reason you need not to do it.
You can never go back to the age you are now, so make the best of it.
Be a happy 17 year old girl, please.