Senggugut dan sakit pinggang tu memang normal dalam trimester ketiga, but the hardening + intense kicks combined dengan sakit kaki tu worth checking dengan doctor just to be safe! At 30 weeks, Braxton Hicks boleh jadi, tapi especially since you're a first-time mum, better confirm dengan doc whether it's practice contractions or something else, a few of my mum friends had similar feelings and doc just gave them the all-clear after a quick check, so tak perlu paranoid tapi jangan delay juga. How often does the hardening happen, and does it come and go, or constant?