Hi Luigi!

Are you already getting the gluteal pain or everything is ok? If you have had common muscle pain before (DOMS - delayed onset muscle soreness) then you know that it normally shows up after a day or two of unaccustomed or increased activity and only lasts up to 72 hours (although sometimes slightly longer) and the muscles feel very stiff, sore and sometimes very warm as well. Herniated disc produces most likely irritating pain which may not be constant, depending on the activity (as you most probably know due to your experience). However this can vary from individual to individual. Have you had recently any check ups? Stiff calf muscle may be associated with lumbar nerve irritation, you should get it checked out.

Regards

Monika