To make along story short, I got adopted by a new born kitten. I am guessing her age to be around 10 days. I got her on the 9th of May. So I have had her for a week now. Her eyes are not open yet but I can see a line forming on the slits so expecting her to open her eyes soon. All I can say is she is perfect. As I don't have kitten milk replacement, I have been feeding a home made formula I got from kitten care( 3oz condensed milk, 3oz water, 4oz full fat yogurt and 3 egg yolks). She is taking about 4ml formula. She is peeing really well on stimulation. On the 9th she had a hard stool which was dark brown and right after had a semi soft stool. She is very active, loves to climb all over my hands, purrs a lot, sleeps really well. I am keeping her warm and feeding her every two hour. But she has not pooped since. Her stomach is not bloated and I have been stimulating before and after meals. She pees a lot but no poop. I am really worried. Today I took her to a vet and he said she was too small for them to do anything. Just to wait, she will poop. He did tell me to switch her to a lactose free infant formula (human). I have given the kitten two meals with this new formula but nothing yet. Please someone help. Is constipation life threatening in cats?