I just had sexual intercourse with this guy I've been sleeping with on and off for 7 months... its been a month since the last time so its been a while; but anyway right after we were finished my vagina swells up a little and it hurts for me to walk and sit down. Oh you and not to mention, it stings a little when I went pee. Could this be from lack of lubrication? Or because we haven't had sex in a while?