I HAVE WHAT FEELS LIKE A CUT ON MY BUTT....NO

I HAVE WHAT FEELS LIKE A CUT ON MY BUTT....NO BLOOD ON PAD ...AWHILE BACK WHAT I THOUGHT WAS A MUSCLE, ON MY RIGHT CHEAK OPENED UP AFTER A HOT SHOWER....I WENT TO BED . WHEN I
WENT TO BATHROOM THERE WAS BLOOD EVERWHERE IT OPENED UP BY ITSELF...I WENT BACK TO BED
EVERY THING CLEARED UP DR. SAW NOTHING . AFTER ALL OF THIS , FROM SITTING QUITE A BIT,
I FEEL LIKE A CUT THAT WON'T HEAL.....
I.M ON A FIXED INCOME & 91 .YEARS YOUNG. DIDN,T KNOW THERE WAS A PAYMENT DUE......