THANKS FOR CHOOSING HCM,
physical activity can be continued(because it is not too sternous)
get your haemoglobin
% checked ,if it is less you feel easy fatigue
,breathlesness on activity etc
on activity muscles produce lactic acid that causes pain
so you can go for pain killers at times ,but dont make it a habit
when you do an exercise ,give small breaks and do it,so that you will be able to do for a longer time with less pain and you can burn more calories
avoid heavy exercises during your periods.
if you think the pain is more severe ,you can give a pause
for the exercise and meet your doctor.
hope i answered your query
feel free to contact me for further queries