In the past week or so, I've noticed that every now and then (it was every couple of days, but now seems to happening once a day) I get this really sharp pain in my belly. It seems to happen when I'm doing something a bit more active (like vacuuming), but sometimes it just happens when I stand up from sitting. I'm pretty sure it's not round ligament pains, cause it's not in my sides - it's more in the centre of my tummy, under my belly button. The pain seems to run up and down my belly, and is worse if I put any pressure on it. The pain probably only last a few minutes, and then goes away as quickly as it came. I've also noticed that just sitting and resting seem to help it go away. It's not a crampy pain either, and isn't at all like period pain.
Is this normal, or this something I should be concerned about? I don't have another check-up with the midwives for another two weeks, so it's awhile before I can ask about it. I had a scan a couple of days ago and everything was fine there, and I still feel bubs move all through the day too.