Puppy is getting over parvo need some additional help.?

Hi, my 9 week old shephard/beagle mix is getting over parvo. She first came down with the symptoms 10 days ago. I took her to the hospital 2 hours after I saw her throwing up and lethargic. She spent 4 days in the hospital and then came home with a strict list of instructions and diet needs. We have emptied our bank accounts paying for this and I wanted to post here before taking her back to the vet because I am narotic. The day she came home she was weak but much better. The day after and every day since, she was eating boiled chicken and rice and drinking water like crazy. I have been giving her meds prescribed for her diarreha, as well as a pasty nutritional supplement into her mouth daily to boost protein/sugar/vitamin intake. Anyway, she has had diarreha since she has been home, it started out always brownish, then it was looking yellow pasty-ish just yesterday. Now today it is a watery maroon/brick red/brown color. I have a bad feeling it may be blood. But she is still eating and drinking and is driving my other dog NUTS with how playful and hyper she is. So, if the parvo is supposed to be going away, what new things could be happening after its onslaught? I mean, if I take her to the vet, is there something linked to it that she could have now. If so let me know please so I can take her there, out of genuine concern, and not cause I am nuts and over worried. Oh, also she has not thrown up at all since she was in the hospital. So that is good I guess.