What Causes Bad Odor White Vaginal Discharge?

this is relly weird but i haave to ask.i was happy and rlly excited and jumping around when i felt my vigina wet.i though i might have just peeded on my self a bit er sumthing.so i just check.andthere was this milky,white,dischar there.it might have ben cum im not sure.i dont think it was cuz i wasnt having sex.but anyways it smelled weird like kinda like ham...imbeing completly seriouse can you please tell me what the stuff is and why it might of happened?