I had my post-op appointment yesterday and thankfully the margins were clear so no further surgery needed and the lymph nodes were clear too. I feel like a weight has been lifted, I'd almost convinced myself it was all going too smoothly and started really worrying.
Apparently the wound is healing nicely - I didn't dare look while the dressing was off. They drained some fluid which made a huge difference and I was able to lie on my side last night! it feels like the fluid is building back up though so will see how it goes and call the nurses to get it drained again.
@Beckyvdb, good advice on the bra - I have been wearing a soft bralette/crop top to sleep in as much for psychological as physical support, I am not 'large breasted' either @arpie but through all this have learned they are very dense. I've thrown out my underwired bras and bought wirefree versions. I only really wear 'proper' bras for work as I feel a bit under-dressed otherwise. I find bralettes and vest tops are sufficient for casual wear.
Next step in treatment is radiation in 5 weeks or so, so that'll bring this thread back on topic ;)