Virgin Problems

I am 20 years old and I am a virgin. I am ready to have sex physically and emotionally but mentally, I have a fear that I am doing the wrong thing. Having been raised in a family of christians, I am unsure if I will be seen the same way in my parents eyes. It is expected of me to get married and then lose my virginity to my husband. This is how my parents and grand-parents have lived. I love my boyfriend and I want to have sex without having a doubt on my mind. Could anyone relate? Any advice?