Hey, remember to take care of yourself! Switching shifts cam be stressful in itself, adjusting your body's rhythms and all. Still if you've been on the better shift for three months and still are constantly exhausted, maybe you should get a check-up and make sure you're not anemic, which can happen when you're not taking care of yourself! (That happened to my big sister when she was in college, and the health center at her school just told her she probably had Mono, and didn't check! She had to come home and see the family doc to get it diagnosed.)

Welcome back, hope things keep getting better for you. Hug that pooch!