Well, the obvious move is to see your vet, but in the meantime some home treatments you can try are Immodium AD. I would try to crush 1/2 tablet into a treat or something you know she will eat. For the vomiting, you can crush 1/4 tablet of pepcid twice daily as well. 1/2-1 teaspoons of maalox twice daily may also help.
If you can get a stool sample and at least bring that to the vet for a parasite screen, this is a good first step. I would also discuss with your vet the use of a sedative (ie valium), so you can get her in to be seen.
I hope this helps and gives you some direction
Thanks
Dr. Jeff
I have some Lomotil on hand - would l/2 tablet of that in her food work?
Would the vet have to prescribe the valium to give her so I can get her there?
Yes, you would need to get the vet to prescribe the valium. Not all will do this, but understanding the situation, some may. You can use this at a dose of (diphenoxylate) 0.025 mg/lb twice a day. I have found suggestions for higher doses, but I would stick to the low end.
I hope this helps
Cat Veterinarian
Small Animal General Practitioner and Practice owner. 8+ years of practice