Winnie has a large tumor

I had her lump checked last year and the vet indicated that it was probably not cancer.  Well this past week, the tumor had turned purple, and she was vomiting.  We noticed the growth under her belly was larger and hard as a rock.  I have had two visits that required x-rays and cost over 300 for each visit.  They are now recommending that she receive an ultrasound this week.  She is curretnly on several medications. 

I will be using All Friends animal hospital in Norwich, Connecticut. I will provide itemized receipts of her costs, and will donate any additional funds toward a local animal shelter. I will provide more details on which shelter or I am willing to get a majority vote of everyones' liking to a worthy animal cause. I normally don't look for help, but I am strapped for cash.  I am currently waiting on a care credit increase for the upcoming ultrasound costs.