Sayang, perut mengeras kat 33 weeks boleh normal (Braxton Hicks), tapi since you're having the hardening + frequent toilet trips + pelvic pain + feeling baby dropped low, please call your doctor or go to the hospital today to check , better safe than sorry at this stage! A few of us mums experienced similar and kena monitor closely, so don't wait. Bukan mesti labour, tapi kena confirm dengan doctor to make sure everything OK with you and baby. Take care, and do go check yourself out!