Friend, vomiting and bloody diarrhea can be caused by many different conditions. It will be difficult for me to determine the exact underlying cause without a hands on examination and some testing. But, common causes are: Infections (parvo), dietary indiscretion, ingestion of a foreign body, etc. to name a few causes. Having pale gums is a major concern, this could be a sign of severe dehydration.
In this case treating from home is going to be very difficult. You see, if she is vomiting she will not keep fluid down so it will be difficult to get her hydrated. In addition, it is important to do some testing to determine the exact underlying cause. I would highly recommend having her checked today by a veterinarian; if this is related to parvo or ingestion of a foreign body the outcome could be fatal if she is not treated promptly. In the meantime this is what you can do:
1- Do not give things like Pepto Bismol it will make the bleeding worst. Start her on Pepcid AC (famotidine) 10mg 1/4 tablet every 12 hours. You can buy Pepcid AC over the counter in any pharmacy.
2- Give her 1 teaspoon of honey, pancake or karo syrup directly into her mouth. Wait 20 minutes and if she does not vomit offer a small amount of water. Wait half hour, if no vomiting, offer small amount of rice (50%) and boiled boneless chicken or ground beef (50%) 4-6 times a day.
3- Follow up with a veterinarian for a hands on examination as soon as you can.
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