Do you have a partner? If you're so stressed over sex I would definately suggest that you don't attempt to sleep with anyone just yet, especially if you don't have strong feelings for them. If you're with someone you love and who makes you feel safe, things will happen easier because you can ease yourself into sex, start with just doing more tame sexual things before thinking about having sex. How old are you? You shouldn't feel pressured into having sex, because if you don't enjoy it or don't think you 'performed well' even if it's successful you'll feel bad afterwards. If you're with someone you love they will be able to reassure you, whereas if it's a casual relationship you probably won't be offered that support.