I too had bilateral on Dec 21st.  My pain feels more like pressure, but it improved after about a week.  I still have the drains in and they are the largest irritant and annoyance, I am 2 weeks today from surgery.  They used some artificial skin on the reconstruction of my right breast and it is not healing well, so I have to go back to surgery tomorrow and have it removed.  Which means they open the original sutures, remove the expander, and then remove the artificial skin, replace the expander.  Closing all the skin again and the original surgery site, as well as put in a new drain, with a new exit site, as my skin has gotten very sore at the current site.  Out-patient surgery, so I should be home tomorrow afternoon.  The Dr removed some of the saline in the right expander today to reduce the pressure on the skin after the procedure tomorrow.  I'm sure that is what the eventual fills will feel like once we begin the expansion.  It was a great deal of pressure on the muscles, similar to how it felt in the hospital.   Is anyone having a great deal of muscle spasms?  I have them on both sides, consistently throughout the day, and worse at night.  I am trying a different muscle relaxer medicine and see if it helps.