Oo, nangyari din sa akin 'to lalo na pagod na pagod ako! Usually it's just muscle fatigue or poor circulation, lalo na kung matagal kang nakatayo or nagwork, pero pag patuloy talaga, mas better check with your OB or doctor na lang para sure, lalo na kung pregnant ka pa or may ibang symptoms. A few of my mum friends din nag-complain ng ganito, at nag-improve lang sila pag nag-stretch or nag-massage ng konti before bed. Try elevating your legs slightly with a pillow or do some gentle stretches, minsan talaga nawala lang ang sakit nila after that!