I found this kitten around 3 weeks old at my dads work screaming cause it was cold and starving I could feel every bone in it body so I took it home also my cat has had kittens and they are around 3 weeks old I tried feedibg her my cats milk but my cat didn't' really like it so I go cat milk replacement or(kmr) it loved that so that night I feed it again 3 hours after loved that as well I wraped it up and it slept for 6 hours feed it again the next day my cat let it in its place were she feeds her kittens but the kitten was still so weak it couldn't climb up so I just fed it kmr it was happy that night I tried feeding it kmr he/she did not want it it had been 4 hours I tried putting it to my cats tit but did not want that either then I realized it was very weak just flip floping around couldn't really move and it started screaming in pain I tried to carm it down but it must have not had enough energy to survive v got it in a blanket as I type it's sleeping now but it dosen't look like it will make it I tried calling the vet and all the closest ones were closed so what should I do please I have been crying all night help its hurting so bad I love it so very much :( please reply asap thank you

Please I need to no its going to die please :( thank you

If you are doing all you can,
1-warmth, a towel covered heating pad (toasty, but not too hot)
2-kitten replacer, every 3-4 hours, depending.
3-stimulating her to pee and poo (a warm cloth rubbing the anus and genitals until she goes.

Unfortunately, some just won't make it.
And if she doesn't there is nothing for you to beat yourself up about, you have tried.
If you can find a vet this morning and she is still surviving I would get her in to have her checked.
She may be hypoglycemic, (low blood sugar) You can put a small amount of syrup on the gums. Karo syrup or even regular pancake syrup will do if that is what you have.
Keep in mind that this will only produce temporary results, if the kitten is unable to maintain a good level of glucose then she will start to wane and get weak all over again.
Report back please and let us know how she is doing.

[B]First of all calm down look at the kitten see what is hapeening my cat just went through this stage. Make sure nobody fluids are coming out if there are keep the kitten warm slightly push down it's stomach to make sure air can get through.If it screams with pain just move your hand or it WILL bite you. Keep it in covers and feed it bread soaked in water and it should be just fine!:)