When the bitch is ready, her bleeding will stop for a few days, it'll be pinky and watery and then like a straw colour and watery. This only lasts for about 2-3 days and can be anytime now if she is on day 12.
My bitch was on day 12 and 13 when this happened but there is no hard and fast rules, just keep checking her.

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ShazaLhasa
My fabulous furry friends