Sobrang normal yan, mare, almost lahat ng pregnant mommies namin ganyan around 6 months pa lang, lalo na pag mainit o tumatagal kang nakatayo! Try elevating your legs when you're resting, drink lots of water, at wear comfortable shoes or compression socks kung kaya mo, a few of us swear by the compression socks talaga, it really helps. But since you're worried, mas better i-mention mo rin sa OB mo next checkup para ma-rule out any concerns at makahingi ng peace of mind. Chin up, sis, almost halfway there na!