I Am a Cna

I've been working as a CNA at a LTC facility and I feel like its not for me, because I see all those people and feel bad for them. whenever i head to work I just get this sickening feels in my stomach and move up my throat. I have seconds thoughts about doing it all the time but then whenever i get there and start working I feel better like I tell myself I can do this one more day but then I get the same feeling again I don't know if I should keep working there and keep going to school for Nursing or to just look for something else I can do. I've always liked helping people a lot but I really don't know if I should continue in this path :/