Salam! Memang common la 32 weeks, itu Braxton Hicks contractions, practice contractions je. Tapi kalau memang follow dengan actual bowel movement, boleh jugak constipation yang biasa dalam pregnancy ni, so minum air banyak-banyak dan makan fibre. A few of my mum friends experienced the same and it was just normal pregnancy stuff, but honestly kalau worried or kalau ada bleeding atau cramping yang intense, better check with your gynae just to be safe, takut risau je kan during these last few weeks. Take care!