Hi. If this has been going on
for more than 2 or 3 days (maximum) then it is likely a gastrointestinal infection, which will need antibiotics. She needs the attention of a vet to examine, diagnose accurately and prescribe medicine. You should not leave this, so borrow money if you have to, or sell something to raise the funds, or seek the help of a local canine welfare association - or ask your vet if you can pay in installments - whatever it takes, please get your dog to the vet.