There was a post about this earlier with lots of people at 30w saying they’ve had the same so I think it might be common! But if you’re worried it’s always worth ringing your midwife and checking 😊
This is normal, it’s just your bump stretching :)
@Julie okay thanks
I am having some pain in my lower pelvic region too.. not cramps really but similar to yours- feeling pain while walking and standing and sitting.. lying down with straight legs feels comfortable.. i thought i wore some tight fitting by clothes or maybe sat for longer, thats why its there.. I too am 30 weeks pregnant. Looking forward to more comments to understand if this needn’t be checked.