I am pretty new to watching the heat cycle this close, but if it is a pinkish/clear/ or something along those lines it could mean she has ovulated and is ready to be bred. (If that is the case, then she would have already gone through the bleeding part and it has turned to the 2nd phase which is the clear-ish fluid) That may be helpful.
-now someone else with more experience may come in tell you something different but that's what I have learned to look for so far.