I have a prosthesis which I don't like at all!Most days I don't wear it,instead I prefer to wear a firm fitting singlet top under my clothes.I have no problem laying in bed on either side,and I have no pain at all.It feels just like before,but minus a breast.The operation wasn't painful,and I only took Panadol.The most important thing I would say is to do the exercises and stretches that you get given,even if it is uncomfortable to begin with.If you don't do them,it is then I believe,that you will have trouble with movement,and consequently,pain.Also,I have never had a sore shoulder in bed.I try to wear loose fitting shirt tops,and it is hardly noticeable that I am minus a breast.However,I couldn't care at all if people do notice.I hope this helps.Let us know how you go.Cheers Robyn.