Wa'alaikumassalam! Gatal-gatal di trimester 3 mmg common lah, tapi kena pergi check dengan doctor sebab ada few reasons boleh cause ni, dari stretching of skin, hormones, sampai conditions yang kena monitor macam cholestasis. A few of my mum friends had the same issue, some kena pakai moisturiser lebih, tapi ada yang memang kena treatment from doc. Better safe than sorry lah especially in final trimester, so jangan tahan-tahan, book an appointment ya!