Your symptoms of mild leg swelling and pain after office hours are likely due to prolonged sitting, which can reduce circulation and cause dependent edema/ swelling
However, your
Vitamin D level is very low (5 ng/mL) — this can cause muscle pain, fatigue, and weakness.
Advice: Take Vitamin D supplementation as prescribed (usually 60,000 IU weekly for 8 weeks).
Walking exercises every one to two hours after work
put a pillow under your legs before sleep
Stay hydrated during the day.
Wear compression socks if swelling persists.
If swelling increases, becomes one-sided, or is associated with redness, please consult a surgeon