From your description it sounds like transplant shock. Blueberries are shallow rooted and like to have frequent water but not as much as you might water a tree. Too much water and roots will rot. The most important issue is soil pH as they like to have an acid soil. Soils in your area may have a high pH so getting that tested will help. Overall, it is hard to transplant in the spring and do well in our 100+F heat events. I do not think you have any diseases you mention. Keep caring for them and hope they survive the summer and winter. 

Hi Jay, Thanks for this info.  I just wanted to make sure that you saw the photos that I sent with the lesions on the branches? Is that also possibly from the transplanting?

Emily - Those are natural formations on the side of branches as they get older and more mature. We tend to see them on the sun side of the branch first. Make a little cut on top of them or use your finger nail and see if the tissue is green underneath as it should be. A canker would be brown and dry.