I was in this situation when I worked in hospital while ago. I did not like it, even some of the staff there said if I had any sense I would not have gone there. I tried to change placements as I felt I would not do well or enjoy it, but was told I could not and it would be goo experience. At that time it was very difficult to find your own placement due to lack of knowledge and resources. So I had to carry on and eventually did not pass. So the moral is if you dont feel comfortable at your placement, try your best to adapt, to voice your concerns, to compromise but if all this makes no difference and you feel unhappy still then definitely leave or change placements. If you dont enjoy it or get along with your tutor it is llikely you will not learn much and will not be passed.