Aduh, 29 weeks tu memang badan terasa berat kan, tapi kalau sakit teramat-matan macam ni better check with your doctor cepat sikit sebab boleh jadi banyak reasons, from dehydration to muscle strain ke yang lain. A few of my mum friends kena muscle cramps masa pregnant, pastu dorang kena increase calcium dan magnesium intake (supplements or through food), plus stretch sikit-sikit throughout the day and make sure minum air banyak; if it's swelling + pain, tu boleh sign of something else yang doctor perlu tengok.