I have something called sciatica. It cause a great deal of pain mainly in my left leg. Do your legs ever tingle, burn or go numb?
Where is the pain in your leg? Be careful to watch out for blood clots, mainly present in calfs that cause pain and even redness and warmth but not always. Pregnant women are at higher risk, if you lay or sit for long periods at a time then make sure to be stretching your feet and rotating them. But if you suspect you have blood clot then get checked again and see a cardiologist