What Could Recurring Pain In Inner Knees And Tightness In Ankles Indicate?

Hi Doctor, I was a regular gym goer. For past one month I m feeling little pain on the inner side of knees and tightness in ankles and sometimes I feel like I have multiple broken bones in my leg area from knee to ankle and it gets heal after 2 days itself if I work out the same condition comes back. I was a regular gym goer for past 3 weeks I m not working out in gym however doing mild cycling and some walking only. When I discussed my condition with the doctor last week. I was surprised that he didn t tell me to get the x-ray done however he told me that I have sprain in legs and prescribed me zerodol-p twice a day after meal for 5 days and I have to visit again after 5 days for review. Please suggest. Thanks.