Yes, there absolutely is a transition period when switching to raw, farm-fresh milk! 

For people who are not used to drinking raw milk, there can often be a transitory time where you experience some digestive symptoms while your body adjusts. If your digestive system is sensitive, if you have allergies, or if your gut is not perfectly healthy, it may be best for you to slowly introduce your body to raw dairy. Many people these days have damaged and unhealthy digestive symptoms due to antibiotics and common environmental and lifestyle toxins. Depending on the state of your gut, you may need to take it as slowly as a fraction of a cup daily for some time until you get used to the huge amount of probiotics in your new diet. Many people could experience an upset stomach for a time while adjusting, but this is normal and actually good sign that you are replenishing your gut with good healthy bacteria.

Cheers!