Sleep anxiety and insomnia

25 weeks and i cant sleep at all. Like literally cant sleep all night. I have two other school going kids whom i have to get up with at 6 am and now with no sleeep all night im getting sleep anxiety. Does any body have anything positive to share about this please . When i cant i sleep i get anxiety of even trying to sleeep and that eludes sleep even more. I am worried il be so damn tired i wont be able to function at all..please.please tell me it gets better please tell me this is normal. I am worried sick. Any kind words please