Leave her be, andgive her time!
She will have them when you leave her a lone. Anything can be a sign if you look at it as such. If she eats at 5 PM and NEVER ate at 5 PM, if she is sleeping on her left size and always sleeps on her belly, if sheis licking between her toes and never did that before. Just leave her be and she will be fine. No one can say what forsure is a sign in a rabbit as each rabbit is diffrent.
Laying down is, get this, a sign of resting! Amazing, it's just like magic! Rabbits can have labor pains before they start having the babies, as allliving things,so you sitting and watching her 24/7 is only going to make her put off her labor. Rabbits can go 10 days or more over due from my experiance but that long in the uterus only causes death.
Also, this isn't a chat room, people are not always on to answer you. Not everyone is knowledgeable in rabbit breeding, birthing, raising, etc, so even if there is 20 people online that doesn't mean evenone of them knows anything on this matter or even looks at your post.