I agree with the people who recommended cabbage. I know it sounds a bit odd, but it works great. Just make sure you slightly damage the leaves first. I just used a rolling pin or a cup and rolled over the leaves, to allow a bit of the juice to seep out. Then place them in your bra and change when they dry out. It relieves the pain, swelling and helps you dry out naturally. If you sleep with it in your bra, which I highly recommend, the cabbage will be a bit difficult to peel off in the morning, but taking it off in the shower, is a very easy fix.
Good luck.
D.