Bilateral Latissimus Breast Reconstruction

Hi

I had a lumpectomy 18 years ago due to breast cancer  which was treated by radiotheraphy.  I thought I was home and hosed after so long but in January 2013 I was diagnosed with an invasive grade 3 breast cancer in my other breast.  I underwent a double mastectomy  and reconstruction just over 4 weeks ago and it was recommended I have a Latissumus dorsi flap using expanders.  What I would like to know is how long does it take for the tightness, discomfort and pain in my chest to abate.  It has been recommended that I have chemo, not sure why as my lymph nodes were clear but I do have a strong family history of breast cancer so maybe it is just a precaution.  I would be interested to hear from anyone who has had this procedure so I can get a clearer picture.  Cheers

Mikki