Espresso powder in my protein coffee

And now I'm all jittery.  I've used instant espresso powder pre op before, and yes I did feel extra perky most times, but I've never felt like this before. Today was my first time trying it since surgery. My hands are actually shaking, my breathing is fasting than normal, and I just don't feel well.  Should I be concerned enough to call my Dr. or will this pass with drinking lots of water and time?

Try switching to decaf in your protein shake.  I got instant decaf coffee to add to my chocolate protein shakes, since I'm supposed to cutting out caffiene before my surgery. I just add about a teaspoon to the water.  Gives you a good coffee flavor without the jitters.