3 months post op BBL, feeling extremes amounts of pains from hard spots on my bottom. Advice?

I am 2 months post op BBL. 4 days after I was hospitalized with cellulitis. 6 days with antibiotics thru IV. Then 10 days once back home. After 6 wks I was told I can sit on a pillow. I tried & felt lots of pain in areas. I told my surgeon who said hard spots may be dead fat & suggested I put a hot pad & exercise but I am in too much pain to do so. I can’t sit thru dinner, sit in car, or sleep, without bad pain. I have dark spots on my bottom also. No meds for pain were subscribed. Please help