I have a 3 week old and a 3 year old. Last night the 3 week old did a long stretch of sleep during which I was kept up by a poorly 3y old. This seems to have triggered massive anxiety around sleep and since then I have not been able to sleep. I lay awake all night. Its happening tonight again. They are both peacefully asleep now and I just can't sleep. I'm hot, sweaty and dizzy, starting to feel ill from lack of sleep after 3 weeks of limited sleep already. I'm so scared, if I become unwell what will happen to my DC? I feel like I won't survive unless I sleep soon but I just can't. I know I only have a couple of hours till baby needs a feed but I just can't freaking sleep. It's a horrible feeling and I'm freaking out.