Kudos for being so responsible and prepared. What tests you need really depends on your gender (that is, are you a man, woman, trans man, trans woman or something else?), the gender of your sex partner and what type of sex you're having. A medical provider can help you figure out what tests you need. Also if you are in a heterosexual relationship, you should talk with your partner and medical provider about pregnancy prevention (contraception). Many people are nervous about talking to their provider about sex. Here are some strategies: