Had to go back to my desk job 11 days after BBL. Hear conflicting stories about sitting so early on?

It really is difficult to say, but after one week you should be ok to sit without killing fat cells.  The grafts should get their established blood supply after 7 days.  Taking the precautions you already are taking will help.

 Capillary ingrowth into grafted tissue begins to do three days after the procedure.The process continues for several weeks after the procedure.If that grafted tissue does not receive some type of direct nutrients through direct blood supply within the first week the tissue will most likely not survive.The concerns we have about sitting is disrupting  any growth of capillaries growing into the grafted fat.This process is called neovascularization. I personally believe that capillary in growth or revascularization is deficient at two weeks to support the grafted fat cells minimizing the chance for compromise from applied pressure. The reason you hear conflicting information is due to the lack of good science proving the importance of avoiding pressure on areas treated with fat grafting. While there is been substantial research in the field it's difficult to prove it with great accuracy the impact that pressure can have. To prove this one way or another as study would have to be set up or some patients sit on the  grafted areas sooner than others to determine what the impact is.I don't think any patient would sign up to purposely sit on their Brazilian early just for the sake of science. I instruct my patients to avoid direct pressure or minimizing it for the first two weeks and taking it as easy as possible for the following two weeks. I personally believe excessive movement is also undesirable in the early phases of healing.My best guess is you will not have compromised your Brazilian significantly by sitting at 11 days. Best,Mats Hagstrom M.D.