Bacterial vaginosis ?

The next morning after sex I get a foul odor. Most describe as a fishy smell. I have noticed the same smell when a sperm filled condom is left in the garbage.. After sex I usually go to the bathroom, pee and use toilet paper to wipe the excess sperm away.. This smell is ONLY there following sex. Does this seem like bacterial vaginosis or do I just need to be using something else to clean and/or shower?