I would second what Mark said about being hydrated and the benefits of potassium.
But I still think the issue you are having could be a mechanical one. The danger is the new things you are doing (supporting on your right leg) may continue to cause injury, not get stronger with time. In other words, if you have weakness in one area, so you are taxing another to compensate, then you are not training the weakness to get stronger, so the issue actually gets worse. Maybe you are over using the knee or the calf to make up for a weakness in say the hip.
I guess the rule is if you get hurt, then heal and it's fine you are probably OK. But if you get hurt, heal and then get the same injury again when you return to that activity, that is a cycle and you should get it checked out.
Undefeated in all of Asia!