You should strain it...even if you won't use it, this way you will be able to tell if there are small clots or strings. And, if there is sediment in the bottom of the jar, you'll be able to tell if it's just blood or infection. I have had 2 does give pink milk...one was a FF with an extremely tight udder and the other got rammed by another goat. Botrh cleared up with multiple milkings to keep the udder empty to avoid putting pressure on the weakened capillaries.