Hi guys I need some advice. My bitch was mated 16 days ago on day 15 of her season. She continued to bleed as normal after mating. This is normal for her as on previous seasons she stops on day 21 with the exception of when she was in whelp last time where she continued to bleed until day 24 and went on to have a healthy litter of 6. This time she is still bleeding at day 31

when I say bleeding it went a light brownish discharge, except for the last couple of days where it seems to have got a bit heavier again. It's not dripping from her but there is definitely more than the last 2 weeks, a reddish brown discharge. I took her to the vets on Thursday which really confirmed what I already thought, there is no odour with the discharge, her temp is normal, she is well and eating etc so they didn't give her ab's. I spoke to the breeder of my bitch and she said that this particular colour in her line is always awkward and often continues bleeding if they are in whelp. I'm just a bit concerned that there has been more discharge the last 2 days . Could this be that she is reducing numbers? as I am sure that this is around the time that the blastocystes implant and start to grow into embryos or could she be aborting? She is showing signs (all be it early) of being in whelp. Her nipples are starting to pink up and she's acting "precious" as one of my friends put it. Isn't it frustrating when they don't do things by the book

any advice would be appreciated.