Your insides are trying to tell you something, so you need to pay attention to this. Your boyfriend's advice about going ahead with sex and deciding afterward if you like it, is in our opinion putting the cart before the horse. We would like to think that before anyone has sex, that he or she has given it a lot of thought and is ready emotionally, physically and spiritually, if spirituality is important to the person. If people have doubts, it's almost always better to wait until they're sure. Please don't feel alone in the difficulty you're having with this big decision.
Many young people struggle with the same doubts and feelings.
This is because teen-agers often have high levels of sexual excitability, and at the same time may not wish to have sex. This causes discomfort and confusion. Young people have many reasons not to have sex. They believe it's morally or religiously wrong. They feel emotionally unready.