Well sweetheart :/ I think everyone should use birth control and a condom, you could get a very serious life threatening std, please use protection. But the above comment is correct, you cannot show signs the day after, you could just be phsycologically doing that to yourself, I say dont do anything with your boyfriend and make sure you dont miss your period before doing anything, and get birth control or condoms girl please! (:
no there is no way you can have symptoms after a day sorry your probably just freaking out because you had unprotected sex you can get the plan b pills if you take them within 72 hours and then you wait to see if your late then take a pregnancy test it won't stop a pregnancy that already happened and be more careful you can get more than a baby from unprotected sex