I'm so worried

[lua]

Hi, I'm so glad I found this place it makes me feel like I'm not alone. My dog Delilah has been with diarrhea. I took her to the vet Tuesday,27. her poop was like mustard, yellow and mushy, no blood or mucus. The Vet gave her subcutaneous fluids, antibiotics, injection of Ampicillin. He also prescribed Metronidazole 500mg and Amoxi Tabs. Yesterday she got watery poop, today it was firm but with a little pinkish color. I've been giving her rice with chicken. should I wait another day or take her back, any advice for me. I love this dog, she's actually my son's he's way, he's a marine, I don't want to tell him she's sick he's going to be worried.