What Causes Discharge After Intercourse With Severe Itching?

EVERY TIME I HAVE SEXUAL INTERCOURSE I HAVE A HEAVY DISCHARGE AND WHEN IT TOUCHES MY SKIN OR MY HUSBAND SKIN WE GET A VERY ITCHY SENSATION THAT WE CANT CONTROL WE HAVE TRIED JOCK ITCH CREAMS AND NOTHING WORKS. WE HAVE AN UNCONTOLABLE ITCH THAT WONT STOP AND WE SCRATCH ALL DAY