Swelling in Feet After Liposuction

Liposuction is an extensive sterile traumatic event. You are stabbed tens to hundreds of times with a sterile steel tube which vacuums fat from under the skin. To compress these tunnels and promote scar adherence of the skin to the underlying muscle frame we commonly use compression garments (medicalese for girdles).
The trauma of surgery results in swelling and some hardness of the tissues under the skin and swelling below the area. The garments themselves delay flow in the veins and lymphatic vessels below the garments resulting in swelling. This is common and could be alleviated with periodic loosening of the garment, massaging of the feet / calves towards the groins and either elevation of the legs or lying supine for an hour or so.

The swelling in your feet is most likely related to the compression garments that may be constricting your ankles. Best to make sure it is not too tight in this area or get another garment that goes to your toes.
The swelling and "hardness" in your back is directly related to the trauma of liposuction procedure and should resolve in time.
The bloating is related to water retention and you should restrict salt intake, drink at least 8 - 8oz. glasses of water per day and move around.
Please call your doctor and explain these symptoms to him/her and perhaps go in for another post-op visit to help with these issues. Most of this is perfectly normal at this time and just requires some patience.