Girls, I can't sleep at night, as soon as it gets dark, everywhere hur…

Girls, I can't sleep at night, as soon as it gets dark, everywhere hurts, mainly my back and vulva. If I get into bed, then when I get up from the place such pain like giving birth. Such a feeling was there in the day before the first births. I don't even know what to do, I can't put my son to sleep, I ask my husband. And when he is at work, I have to put him to sleep myself. It's very difficult but we are only six months old. I don't know what will happen at 7-8-9 months. I don't know what to do ?