Pregnant women have at least two or three times higher risk of experiencing restless legs syndrome than the general population, but, this type of RLS, disappears few weeks following the delivery.
Some women, that had pre-existing RLS often complain of worsening symptoms during pregnancy.
You need to visit neurologist, to get the proper diagnosis, cause, she/he is the one who can carry out proper tests and distinguishes between idiopathic (without known reason) and secondary (due to iron deficiency, anemia, thyroid gland disorders, varicose veins; all of these condition can develop or get more prominent during pregnancy) RLS.
Best wishes!
Marija