It's only been a day since you fell. Some injuries could take several days to heal. So, don't beat yourself up because you're not healing as fast as you think you should. You took a nasty fall. take a few days OFF to rest and recover.
you WILL NOT derail any of your efforts at good health or weight loss because you have to take a few days off from your exercise routine. Keep putting that ice on that calf. If you don't see improvement in a couple of days, talk to your doctor.
Don't exercise. Let your leg rest and see how it goes. I know you're itching to exercise, but taking care of our bodies when they become injured IS just as important as the exercise.