If the white mucus is noticed only during after ejaculation and not associated with foul smell or pain or fever
and vagina is normal after and before sex, it may be semen coming out after withdrawal of flaccid penis. if you have white discharge before or having lower abdominal pain
, fever and foul smell from discharge then you may be suffering from leucorhoea or white discharge or due to some infection in your genital tract. If you have any swelling inside your vaginal wall or pain or inflamed reddish vaginal wall then consult your gynecologist for the treatment of your infection by taking a course of antibiotics. Don't put ice on vaginal wall as it causes vasoconstriction
and worsens your condition as vagina is lined by mucosa same as in ouor mouth. Ice should be applied only in case of injury
to other parts of our body to reduce inflammation. Instead of it you can clean your vagina with mild soap and water wash. a luke warm water also helps a lot. You can also try petroleum vaginal jelly to reduce friction during sex.