I am 8 weeks post-op BBL/Lipo, what are the symptoms of fat necrosis?

Initially I had problems with my right side leg/cheek as for numbness on my right toe. My PS said that is normal for this procedure. She prescribe Lyrica and indicate to wait for the swelling to go down. Now that my swelling has improved my right cheek is smaller & with a lump. I have lots of tingling and a sensation of rush of blood with warmnesss. (Chills) Need a second opinion . My PS is difficult to contact after surgery. When I do everything is normal under the PS terms. Help?