Hello, Elizabeth and welcome!
I'm so sorry to hear about this growth on your furry girl's back left thigh. If it was bleeding a lot, this may have caused her to be anemic and that's why her nose and gums are real pale and her head is a little shaky. She may have lost a lot of blood.
If she's not eating very much, she risks developing a serious liver condition called hepatic lipidosis or 'fatty liver,' and we would want to avoid that at all costs.
Due to the severity of the bleeding of this growth and the paleness of her gums, it's very important to have her seen right away by a vet in person. In this way, she can be evaluated and treated. This is not the kind of problem for which there is a home remedy, unfortunately.
The cause of the growth needs to be determined and there's a possibility that it could be infected or even cancerous, so I hope you can get her to the vet or an ER vet center, now, to be examined in person, diagnosed and treated. If you need help finding an ER vet in your area, please provide your zipcode, city and state.
I hope all will be well with your furry girl and please let me know how she's doing and what the vet tells you. Thanks!
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