hi,
thank you for providing the brief history of you.
A thorough clinical Musculoskeletal assessment is advised.
As you have pain in thigh region and you feel you have strained your self this could be muscular. As the pain comes in the night , this will be totally
fatigue induced pain. As during the day time the
metabolism is pretty active and brain is occupied with end number of thoughts so pain might not cause trouble. So initially the pain is in the night which will go off on its own in 5-7 days of time if it is related to DOMS.
Also, if the pain doesn't go in 5-7 days of time and troubles with the change of nature into Radiating,
numbness and
tingling sensation , a thorough clinical neuromuscular assessment is needed to understand further.
Ofcourse when you take medicine than pain will come down as it will work on the pain gate theory and needs some time to see if without medicine pain reduced.
Also, later stages performing some regular exercises will help improve the strength in the muscles and avoid recurrent pains.
in my clinical practice we recommend such patients to get treated with
physical therapy as it will improve the strength in the muscles and avoid future pain and aches.
Regards
Jay Indravadan Patel