Aih mama, ni memang common sangat dalam trimester 3, uterus dah besar, pressure kat bladder jadi lain macam lah. Honestly, a few of my preggy friends had the same thing, and one swear it's just residual urine yang tertinggal sebab uterus compress everything, bukan kencing kotor. Tapi since you're in trimester 3 and anything unusual boleh jadi tanda something else, better check with your doctor just to be safe, maybe it's just pregnancy being pregnancy, tapi best confirm je dengan OB you, especially if suddenly ada rasa sakit atau demam.