Can there ever be Too Much Protein??

I was feeling great the first week home now I have been exhausted I think because I went back to work... Also is there  ever a chance of too much protein???  I am trying to fit in as much protein as I can I am having those protein shots with Propel and 2 shakes a day sometimes with a scoop of protein powder... also how crucial is it to take calcium???  I am not walking at all .. I am tired from work I stand all day (hairstylist)  I always feel wore out at the end of the day....I eat my meals whenever I am feeling hungry a bit not on a schedule...