Greetings, sorry about the pain. I do not see any issues with Your report and nothing to be worried about. All you have is a stiff hamstring muscles. Stretching it will help you.
Next Steps
get to see a physio for massage or get ayurvedic massage and your problem is solved 70%. next learn exercises from physio to keep your core strong and your pain is history.
Health Tips
if any concerns do let me know