YES I AM ASKING ABOUT MY DOG SHE IS ILL

YES I AM ASKING ABOUT MY DOG SHE IS ILL HAS LOST 6 POUNDS IN THE PAST COUPLE OF WEEKS. THIS IS AND HAS BEEN ON GOING FOR OVER A YEAR. WE HAVE IT NARROWED DOWN TO STOMACH ISSUES WITH VOMITING AND DIARREIA. THE WEIGHT LOSS HAS HAPPENED O AD OFF SHE IS ON PERSCRIPTION DOG FOOD AND I AM CONCERNED THAT SHE MAY HAVE CANCER. THAT HAS NOT BEEN RULED OUT. SHE SLEEPS ON HER BACK LEGS UP IN THE AIR. SHE LICKS HER PAWS AND SEEMS TO DO THAT A LOT. I HAVE A LOT OF MEDS FOR THIS POOR GIRL AND I AM SCARRED FOR WHAT IS YET TO COME. AGE IS 9 SHE IS A DOBERMAN,
FEMALE. SHE HAS ALWAYS HAD THE BEST DOG FOOD