Hi Sarah, you will deffo start to feel better soon, but first week is really difficult, your breasts are in trauma after the surgery. Take each day as it comes and try not to worry, you will be amazed how different you will feel by next week. And Gerda is right, unders will feel the most painful because not only have they cut through breast tissue, but muscle as well. keep well and let us know how you are getting on over the next few days.
Ps i found ice packs were my saviour lol xx