Ok hi I'm 17 and have been dating my boyfriend since I was 14 and he means quite a lot to me. He's 18 by the way.
I've been on birth control for quite awhile and take a lot of precautions to make sure I don't get pregnant but there's one problem.
I had sex for the first time with my boyfriend, we both planned it as a three year anniversary thing so if I didn't feel comfortable doing it I could say no before hand and avoid the awkwardness of saying no before we got into bed.
I was all for it because I have a lot of feelings for him and I trust him with everything including my body. But even though I was excited and happy about it and was overall pleased with the feeling, ever since that night I feel really self conscious around him and I feel uncomfortable knowing that he's seen me naked and everything. I hope to have sex with him again but I wanted to know if it's normal to feel like this after the first time? And will this feeling go away?
I can't go to my dad about this because we don't have a good relationship and I don't have a mom so the Internet is my last choice I guess.

Yes its normal to feel this way. And those feelings are part of the reason that most of us are not in favor of teenage sex. The problem here is that you really are not mature enough to to deal with the extra pressure intimacy puts on a relationship. That's exactly why you are having those feelings.

The good news is that you seem to have a good guy for a boyfriend if he has waited three years and stuck with you. I would talk to him openly about these feelings.

I have to add one point here. There is no way to "make sure" you don't get pregnant. No form of birth control is 100%. Anytime you have penile insertion, there is the risk of pregnancy. You can reduce the risk, but not eliminate it.

It is normal, and some women even after years with their partner ( years of sexual relatonship) do not like to be "seen" naked" by the other, they will prefer to be more in the dark when they have sex.

Also it can be from social norms we get growing up on what we view sex as.

So if you don't want to do sex again for a while there is no rush.

And as Scott noted, there is no such thing as safe, no form of birth control is 100 percent, and women on the pill and using condoms at times still get pregnant.
So any sexual activity can lead to a baby.

It is absolutely normal, for a virgin of any age to have these feelings. I am so glad to hear that you have taken precautions and made your decision rationally with him. So often I hear people say 'it just happened' or 'i love him so we did it'

The best thing you can do, is talk to him about how you are feeling. Honestly and openly.