had 3 sexual intercourse with a girl this night, after the first one i noticed the top of my gland was hurting when it was rubbing against the bed or anything else, couldnt sleep until the tip of my gland wasnt touching anything,been hurting the whole day and now it looks quite like a tear of 1mm, almost looks normal,but theres a small reddish looking like irritation,the intercourses were pretty fast and hard...so could this be a std? i dont think shes cheating on me and we started having unprotected sex about 6 months ago. i havent been circumsiated. thanks.