Changing universities/course

I am having second thoughts on my university course and I don't know what to do. I am taking Psychology and I'm about three weeks in but I think I want to change. All my life I have had a passion for animals and I would really love to have a career in some kind of animal care. At college I took psychology and found it really interesting, but realistically I don't think I want to have a career in Psychology. I've spoken to family/other people before about how I've felt and they always just seem to say that just having a degree in general opens so many doors. I don't know why I didn't take a veterinary degree or an animal science degree because now I'm really regretting it! Problem is they don't do those courses at my university so if I wanted to do it I would have to change universities.

Has anyone been through something similar? What was the process in terms of the loans and accommodation etc? I've booked to see a careers advisor but would like to speak to someone who has been through a similar situation