Should I use Whey Protein

I work in long term care and literally go nonstop for 7 hours. I am in a sweat for most of my shift. We are a very busy area with some very heavy individuals. When I am finished every muscle in my body aches, legs, back, shoulders, arms and neck. I feel like I have just worked out. I am wondering if I should drink whey protein drinks during or after my shift. I don't want to bulk up but I understand that the protein aids in feeding the muscles. Am I wrong? I just want to know if drinking these drinks will help or hinder me.