mine does that too, i've never heard of the muscle splitting though. If i'm laying down and I go to sit up it gets all hard in the middle and I kinda thought thats where baby is and thats why it did that. I will be 34 weeks tomorrow. The cramping could be braxton hicks or you may need water. My lamaze class instructor said your uterus will cramp it you haven't had enough water. She said 10 glasses a day is what you need. I had cramps earlier today and then I drank alot of water and they went away. Good luck!

My boss commented on it today (he's an ER doc) when I went to stand up after he gave us an ultrasound. I can't remember what he called it, but he said that the abdominal muscles spread apart and move to the sides to make more room for the baby if you don't have enough space. I think the cramps are more of a bruised feeling (they are usually only in one spot at a time) because she is kicking soooooo hard. I don't think its really possible for me to drink more water, it seems like thats all I do all day! Thanks for the help though! We are so close!

Typically if those have been torn they never go back they're also referred to as your six pack muscles
My midwives from my first pregnancy recomended to avoid splitting them roll onto your siide when ever you get up rather than just sitting up if you roll on your side you never use those muscles and in turn they never split

You would need surgery to fix those muscles if you really cared enough that it does that. Mine has always done that, I was born with low tone, and only after having a daughter born with low tone did I even learn about that. Of course, carrying twins last time would have seperated them if they hadn't already been seperated. I was tiny before I had the twins, so I thought EVERYONE's belly did that. I didn't know.

I'd assume that your cramping is braxton hicks. I read that it usually starts around 20 weeks, though I never noticed it until last week (when I was 36 weeks). Very unlikely it has anything to do with your stomach muscles.

i too was smaller before the baby and I WAS HUUUUGE! over 58 inches around my belly. I had horrible stomach pains it felt like my belly was ripping open. i had a 10 lb baby, and she gave me a hernia which split my muscels in the center of my stomach too. I just had it repaired ,and i would say get it repaired sooner rather than later if you have one because i couldnt lift my baby for 2 weeks after surgery because she was 16lbs at the time. I hope you don't have a hernia, but it sounds like what i had when i was pregnant.