31 weeks right side pain/ache?

Just this evening I’ve had this odd dull ache along my right side. It’s weird because it’s kind of mildly sore all the way from my ribs to my leg but very dull. Then occasionally it’ll be quite painful depending on how I lie and wear off again after a bit if I move. It’s better if I stand up. Baby has been moving fine although it’s been pretty uncomfortable this last week with how much she’s pushing/kicking in places quite hard. Does this sound normal and maybe just because of baby or where she’s lying? I don’t remember having it with my first even when it was uncomfortable.