Swollen vagina lips 😭😭

Me and my boyfriend just had sex and it hurt at first so I gave it a second and it didn’t hurt anymore, then as soon as we got done my vagina was kind of sore snd felt like it was bleeding so I looked at it and my freaking vagina lips are SWOLLEN and they hurt so bad 😭 why could this be happening & what Can I do to fix it ☹️

Edit: we’ve been having sex for over a year and we didn’t use condoms so it can’t be that