Job issues!!! Help!!!

S
I work for Hertz and my manager seems to have an issue with me taking next Wednesday off for my U/S. I have been having issues for a while at this place and I can't take it anymore!!! I'm inder so much pressure and stress that I cry at times. I don't need this stress!! Does anyone know of any connections out here in Boston MA?? I'm going to look for a new job. I can't do this much longer.