Weak joints

Is it normal for me to feel my joints weaken? I am on my 39th week this coming Wednesday and the baby still hasn’t popped out. We are still waiting for my little bubble. The last time my doc checked me, my cervix was still close and the baby is still floating, hence she gave me eveprim to take 3x a day. She also advised that I do more walking and squats which I do most of the time (for walking - not really the squatting part). Although some progress has been noticed. I’ve been feeling a few mild contractions or burning sensation on my abdomen part. But still, I am not sure if baby is nearing to pop out. I am just curious if the weakened joints is part of the symptoms as I have been feeling that the past days. Really been hard for me to move and lift my self up.