It is not surprising that you have difficulty sleeping in the middle of such conflicts. Many students and student couples ask our advice about having intercourse. If so, then you would be creating a lot of inner turmoil to go against your own beliefs. Try to imagine how you would feel about losing your virginity. This is not to say that an emotional reaction to first intercourse is a sign of trouble.
Many people have fears about sex, especially about first intercourse.
A moral decision made out of fear or ignorance is not really related to morals. Don't dismiss this question lightly. Most people don't recognize the full extent of the influence exerted on them by peers. Remember that some friends may be giving the impression they are more sexually experienced than they actually are. Try to have realistic expectations before you decide.