It is likely that the tendon will be affected. I suggest you use crutches if you can find some for at least 2 weeks. A cast boot for immobilization would be better, but I don't know if that is available. Hopefully over the next several weeks this calms down. Ice might be the best choice to use topically. Heat might feel ok but it increases inflammation. If the country you are in has any topical anti-inflammatory creams, rub this on the area affected.
I would not recommend a repeat of this episode.