Change My Own Fate

After the war, Harry visits Gringotts to find out he was betrayed. Feeling betrayed and alone, he found a spell to take him back in time to set things right and take revenge on those who betrayed him. But not all goes his way when Harry is involved. Harry ended up in a different alternate universe as a baby and he doesn't know it. Or does he? SLASH, MPREG, AU, TIME-TRAVEL