What Causes A White-coated Tongue, Black Spots On My Penis Head, And A White Shade Appearing During Erections?

I had unprotected sex Usually with a girl I used to have, never happened anything but this time after 1 month I noticed my tongue is white and when I scrape it goes off but comes back again and I have black inside spots on penis head,no rash no irritation or anything and when my penis sometimes erects,it causes white white shade color to appear on penis?what it could be