white clumpy CM before ovulation?

Alie
Sorry if this is TMI... but last month a day before my IUI I got tons of CM that was clear but then had little specks of white in it.  I thought it was a yeast infection but it wasn't. Went away in a day.  I'm scheduled for my IUI today, triggered last night, and again I have the same thing!!! Anyone else have this ever? Right before ovulation. So weird.