Filler augmentation procedure

I am interested in filler augmentation. How effective is the filler augmentation procedure? I am curious about potential side effects, how long the effects last, and the approximate cost. When can I resume sexual activity immediately after the procedure? I also wonder if the results look natural in terms of shape and texture. How long does the procedure take? Is it very painful? Will there be swelling or bruising? Since this is my first time getting a filler procedure, I have many questions.