Aw mama, ganyan talaga usually towards the end ng pregnancy dahil sa weight at fluid retention, pero since over a month na siya at talagang hindi ka makalakad, kailangan mo na talaga patingin sa OB mo para masiguro kung normal lang yan or may ibang dahilan! A few of my mum friends din nag-complain nito pero mas lumaki during the last weeks lang, so best to get checked para may peace of mind ka and makakuha ng proper advice for pain management.