Ahhh sayang, masa 30 weeks tu memang normal rasa uncomfortable macam tu, uterus dah besar, baby dah heavy, dan ligaments dah stretch. Tapi because you're describing something specific like period-like cramping, better check with your doctor or midwife just to be safe, okay? A few of us had similar feelings at that stage, tapi some were just Braxton Hicks and some needed a quick checkup for peace of mind. Don't stress, but jangan delay jugak, just get it confirmed so you can rest easy!