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Good news then great, and my BP tablets have arrived hurrah.
Mamya thanks you for your suggestion. The thing is when I lie down I still have to move my boob over a little with one hand and have the plaster in the other, As I don't have a ceiling mirror (now LOL) I can't see whether I'm actually covering the wound. I had to do it myself last time when the plaster came off after a shower and I got it wonky with the sticky edge only just missing the wound. So I'll give calm's suggestion a try but think I'll use Gaffer Tape to stick other boob out of the way. That should do it;-)