Pumping white milk and 38.3w pregnant?!

Okay! I’m freaking out a little! I’m pumping to try to bring labor on, which I have done with my two previous pregnancies with no complications. Up until this pump my milk has always been tinted yellow (colostrum) and I have froze it for later use.

But tonight, I was pumping to try to get labor started for I had a membrane sweep today and the milk is a lot more white and it has me concerned! Am I not producing colostrum anymore?? Is this bad that the color is like this?? I’m really worried because this never happened with my last two babies/pregnancies and I just need some reassurance or some insight! Can someone help me??