There is no special age that you're supposed to have sex for the first time, nor any code of conduct for such things either.
Here in America, we've had it drilled into our heads that right up until 11:59PM on the day before your birthday you're still an irresponsible, immature child who has no right to make their own choices, but once that clock strikes midnight, you're a full grown adult ready to face adult problems and adult life. Personally, I hate that philosophy.
If you want to have sex with him, by all means go for it, I recommend using protection but that's also your choice. But don't do it just to "fit in" or be part of the group, do it because you want to and with the person you want to. This is something nobody has a say in but you.
I will answer even though I know my answer won't make a difference either way. You ask is it bad, well, for me sex outside of marriage is bad. So yes, losing your virginity at 17 is bad. I have reasons beyond just religion, but I imagine you would discount those just as much, so I won't spend my time elaborating much, but I will say this, your attitude toward sex and relationships will influence your ability to establish and maintain a long-term happy relationship in the future. If you approach sex lightly, that doesn't bode well for future success and stability.
do what YOU want. It's your choice to stay a virgin or not. Although, if I met a girl and found out she was a virgin I would have WAY more respect for her because it shows her willpower and self-esteem.
there is no right specific age. I certainly don't recommend you do it when you're like 14 or something. but anyway, point is don't worry about being the only virgin left in your group of friends. they all have their own bodies and you have yours. and yours only.
you say you really trust ur boyfriend and that you want to lose it to him. then alright, if you truly feel comfortable with and love and trust him, and he loves and respects you, and if you are PREPARED, then I guess that's your choice to have sex with him.
in my opinion, it sounds like the reason you also say "but then at the same time I don't" is because you truly aren't ready to experience it. and that perfectly ok. don't push yourself and don't ever let anyone push you. you may already know that he's the one you feel you can open yourself up to in that way, but you're just not completely there yet.
not to worry. don't rush losing it. trust me. its SO worth the wait for that special guy you trust to share your body with. :)
wow so what if you spelled a word wrong, jesus this isn't an english class lol. Anyway, there really is no right or wrong age to lose your virginity-don't do it just because all your friends have-that's what many peeps under 16 do. You're more mature than that-do it because you want to and feel ready to do it so that you won't regret it :) You've said at the same time you don't so for me that means you're not ready so I suggest waiting.