Anxious over nothing

I really need to vent out. Latetly for the pass few months I have been very anxious over the fact of becoming pregnant... I dont know why I havent been able to over this irractional fear, since I have never even had sex. I guess its the thought if disappointing my love ones and myself since Im still a teenager that scares me. I take care of myself and never let myself be to caught up in the moment, but the awgul feeling always creeps up on me. I get so self consious about everything... I decided to vent out here beacuse I know that thats why we are all here fir to help eah other out. If anyone else has had or is having a similar problem. Feel free to express yourself in the comments.