Thanks for the follow-up.
I understand your concern.
Firstly i want to explain you everything in detail
Lumbar radiculopathy (the compression of lumbar nerves L4 or L5 or sacral nerves)results in radiating pain in thigh,calf,foot.
It's not necessary to have pain in lumbar region as it can cause pain where the nerve is irritated in it's path and supplying the particular area.
Also it can cause pain at certain positions like lying position,changing position from sitting to standing,etc.
Other possible cause-Muscle strain,Charley horse(you feel like tightness in muscle and pain is severe to unbearable) due to over muscular exertion and as you have slight swelling so it should be ruled out.
Other possible causes may include electrolytes like potassium / magnesium imbalance, vitamin deficiencies,diabetes, poor circulation.
It's advised to try to do some gentle massage with muscle relaxant ointment and take Tylenol in the meantime.
If pain is severe then consult a doctor or visit ER ASAP.
Otherwise make an appointment with your doctor for a clinical examination for further evaluation and management.
I hope this helps.
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