I felt like a sharp pain in one of the nerves in my calf muscles. Could it be a symptom of a rheumatic pain or is just a nerve pull?
Unlikely
It sounds to me like you had a cramp or other muscular pain There are many potential causes for calf pain Should this continue and/or worsen, then I would get checked by your primary care doctor Best wishes
Probably a muscle cramp. Do some calf stretching exercises, but it could be a ruptured popliteal cyst. Ask your doctor about this.