Your doctor will be the best person to speak to. Advice will follow some personal anecdotes, so please indulge me, I'm in a chatty mood. These are unrelated to your injury, so don't start worrying. I just like to tell the story... and there is a point, honest. :-)
As a rule, uncomplicated fractures and clean breaks take about 6 weeks to heal up. However, that's the minimum, and most boney injuries are not without complications. For example, I had a serious ankle injury, and I had complications that were very specific to my type of injury... No bones broke, my ankle joint burst open, smashing the cartilage. It looked horrific, because the ends of the bones had ripped through my skin... it was like something in a butchers' shop window.
After the surgeon had repaired the joint, I was in plaster, (well fibreglass,) for 4 months and off work for 6. I had to have bone scans, because there was a risk that the blood supply to the talus may have been disrupted, and the bone could have turned necrotic. Apparently, this only happens in the talus and the head of the femur, because they have a single arterial feed. As it turned out, the blood supply was fine, thank goodness. That happened in 1990. I still have restricted movement and arthritic pain in the joint today.
The heel bone is the calcaneus, and has multiple arterial feeds, so you don't have that worry.
Another time, I fractured a metacarpal, and was only off work for 3 weeks, and only needed a support bandage. After a month, it was good as new. Anyway, the point I am trying to make, apart from doing that man thing, where we love to talk about our injuries,and how hard that makes us look is to demonstrate that there's so much variance.
I presume you're seeing an orthopaedic surgeon. Talk to him. If not, discuss these matters with your GP. I know it sounds silly, and that you'll feel like a divvy, but make a list of questions to take with you. If he's unspecific, and is waffling, be direct and ask him to research your query. It's his job.
Good luck. Keep that foot rest, elevated and make sure you have somebody to bring you cups of tea/coffee, the remote control, and sweetmeats. :-)
BTW, I would really like to know how you sustained this injury. Here's what Wikipedia has to say on the matter.
Calcaneal fracture, also known as Lover's fracture and Don Juan fracture, is a fracture of the calcaneus. It usually caused by a fall from height.
The name Lover's fracture is derived from the fact that a lover may jump from great heights while trying to escape from the lover's spouse. (Lee P, Hunter T, Taljanovic M. "Musculoskeletal colloquialisms: how did we come up with these names?". Radiographics 24 (4): 1009-27. PMID 15256625)
http://en.wikipedia.org/wiki/Calcaneal_fracture copy
While you're waiting to see your doc, you might also want to check out this site:
http://www.wheelessonline.com/ortho/calcaneal_fracture_1 copy
Good luck!
