To Start Hiking with PCOS and Hypothyroid issues, is not easy but not at all difficult.  Start with walking daily for 30 mins.  Walking is good physical exercise for any person of any age with any disease.  Walking in parks, beach , mountains anywhere.  If you are nature lover then think for Hiking.  It is good way to exercise along with enjoying the beauty of mother nature and being respectful towards nature.

Mount Rainier National Park

Yellow Stone National Park Glacier National Park