Well it was for me, don't know how your doc did it but mine made a very tiny incision (with a local anaesthetic), popped the pellet in and used two tiny stitches to close it up. Didn't hurt all that much when the local wore off but it was mighty uncomfortable for a couple of days. The area had a small bruise for at least two weeks.
But just be careful, it shouldn't be the case but if it really hurts and becomes red and inflamed you might have an infection. If not, all is cool!