Sounds like she is coming into heat. With my bulldog, it usually starts with just little drips and spots of blood and sometimes a little mucous after she pees and then a few days later, it's more blood and I consider her in full heat. You can get your girl some doggie britches to wear while in heat. I have a couple different kinds for my bulldog that are made for dogs without tails. One of them is custom made. I can send you links if you are interested. I slip a maxi pad in there and change it out a few times a day and the britches are very easy to wash.