I understand your concern. This past week I took Ben to the vet to make sure he was all clear. I had seen something in his stool...but after going thru the test I found out it was dried grass.
Please do not worry, I just went thru this same stress and it is not fun. But she will be okay if she is anything like my little guy. In the meanwhile get a sample of her bowel movement put it in a baggie. Maybe do it on Sunday or Monday morning so they do not have to get it from her. They will take the sample run a 15 min test. If she has any, they will prescribe the meds for you then.
It was a few days before I was able to get into a vet as well. I thought about doing a over the counter remedy... But chose to go to the vet when they were available instead of trying to second guess and get a remedy on my own.
Ben had had all of his tests too, but we had visited a doggy park and I thought the grass I saw was worms. So good to just get the test done to make sure.
You have a wonderful weekend...now if it gets to the point where you just absolutely cannot wait please know...some vets are open until noon on Saturday's
I hope this helps.