What's going on Zoe, is your dog has something wrong. This may be a urinary tract infection, and if left untreated, could spread to her kidneys (this can happen) So really she does need to see a vet and get her urine tested. Then perhaps a prescribed antibiotic, if it is a UTI. If so it might be solved very quickly, quite cheaply, and with little fuss, and she might be back to good health again within a few days. That was the case with my dog, who got a UTI a few years ago.