pain during sex

today when my boyfriend and i went to have sex, my vagina was really tight and i had a hard time getting wet from foreplay. i peed after and it stung really bad, this also happened a few days ago. we’re long distance but see each other every three weeks. at first we thought it was just from not being as active, but now im getting concerned it’s something else. anyone know? trying to save myself from a trip to the doctor