Post mastectomy help

I had two surgeries - partial before Christmas and full mastectomy with axillary dissection just after New Year.  I found the surgeries fairly manageable and the drains came out before I came home.  Still have quite a large area of numbness under the arm and the nerve endings around it are scrambled.  The scar is good but tight even though I've been massaging it with BioOil.  I developed cording under the arm which I've got to get sorted.  Most movement is back but it pulls when I stretch in certain ways eg. I can't throw a ball anymore or deal with weight or pressure when extended.  I also get muscles straining along my side and along the underside of my upper arm - I suspect that's due to cording.  Bras drive me insane with rubbing (and pressure on the port) so only wear them when I have to.  I'm going to see the surgeon on Tuesday for a checkup so will find out the verdict on my healing, then.