it is very possible to have a std and not have any symptoms. i would recommend that you both be tested for stds. it is also possible that your girlfriend has a simple vaginal bacterial infection (bacterial vaginitis) that can cause a fishy odor after intercourse. this can easily be tested for and treated by her gynecologist. hi have you been on any antibiotics when this problem happens or happened antis make our sperm smell and if our sperm smells then your g/f's vagina will smell the next day. do hope this helps. good luck
i'm a male and have no symptoms of any std. but when i have sex w/ my girl she has an odor the next day. any thoughts?