I got 6cc of forehead filler (+ Botox between eyebrows) and there is some swelling as the photo was taken right after the procedure, but I think it will look more natural once it goes down.
I had local anesthesia, but there is some pain from the anesthetic injection.
I was a little scared of the pattering sound I heard when the filler was inserted, but the procedure itself is over quickly, so if you just hold on for a little while, it will be over in no time!