I get all sorts of pains. Some days my legs feel like they can't carry me. To me it all comes with anxiety. Hence it never bothers me at all. As it does go away for long periods of time. If in doubt visit a doctor. You could easily get checked over. Could just be a simple muscular pain. With anxiety we are always tensed up. Bound to feel a bit of pain because of this. But if worried visit a doctor.