What Causes Severe Pain In The Calf?
I am wondering if I could have blood clot. Very anxiety producing to go to ER after being dismissed with no findings twice in one month.
Blood clot is not likely
Pain caused by a blood clot is persistent and can't be relieved by moving around.
So, most probably your pain has neuromuscular origin, or could caused by costochondritis or joint problems.
If it is already relieved by Naproxen, I would advise you to plan a regular visit to your doctor, instead of referring to ER, so you will have the opportunity for more detailed check-up and examinations and find out the cause of your complaints.
Come back if you have any further questions
I just wrote some possible causes, but the exact cause may be found out only after careful examination and some tests, that's why I advise you to see your GP for detailed tests.