You should not have any kind of discomfort. If any part of your ear cartilage hurts, you need a refit.
As far as the tickling and popping noises, try wiping them (and your ears) to remove the coat of oil that your ear produces. It create an attachment between the acrylic and your skin, and every time there is a tiny movement, you hear a sort of "detachment" pop. This is pretty normal.