what is this?

i made one forum already and for some reason im not able to upload a pic. im not sure what this is i was having rough sex with a partner last weekend a couple days later this pops up.

please help it has a burning sensation and there is a milky discharge the pic is flip upside down so u might have to turn your phone

i dont see anything this doesnt look like herpes. maybe a yeast infection or something else. get checked out