It is worth sharing these events even if you don't think that they are a big deal. Your coach is trained to listen to your upsets and help you sort out what happened, so you can design a plan to get through this one, and prevent it from happening again. A coach can help you make a better decision. Talk about your options, create a new one and get some perspective on the whole thing. Maybe doing nothing is the best choice.
People grow internally all the time, but periodically they really feel it.
When you've had a shift, the world looks different and what motivated you before is replaced by something better and cleaner. What you once tolerated, you will no longer. The people you spend time with are replaced by those who truly inspire you. A shift almost always feels good, but there can be some fallout, like sadness for letting go, resentment for the costs you had been incurring prior to the shift, etc. People have maybe several shifts during a their lifetime.