Oh Arella - such a tiny wee kittie - how did you manage through the night? Did you get to speak to a vet yet. I think the most important thing is keeping the littlun warm and snuggled - do you have a pipette you can use to give warm water / supplement if he/she cannot suck yet?
Hoping to hear that you're managing to get something down.
ahh, give him/her a little stroke from me and a big stroke to the MaMa kitty.