Hello, I Recently Had Tooth #14 Extracted And Bone Grafting

Hello, I recently had tooth #14 extracted and bone grafting in order for me to have a dental implant. It has been a week since the procedure and I have a bad taste and smell in my mouth. Also, the gum looks grayish, almost black in coloring. I'm not in any pain. I am taking the antibiotic prescribed to me. Is the smell and taste normal? What color should my gums be?