hi,i had unprotected oral 6 weeks ago with a sex worker,i noticed the inside of my penis was grey,i know have terrible gurgling all day in my stomach ,wind and belching,i had a test at 3 weeks,negative but my bloods came back with high pottasium,they redid test and everything was fine,i phoned my doctor the other day to say i have very pale stools and he told me to come in for more bloods.