I am a 2020 grad and started working as a GP. I was promised mentoring, but instead I am handling many cases a day on my own. Is this typical? I am exhausted and so stressed with no support. Definitely not what I expected starting out.
Yes, handling cases on you own is typical. I think it depends on what you were looking for out of mentoring. I know it doesn't feel like it, but you have the knowledge to handle the vast majority of things on your own, you just don't have the confidence. I know, because I still don't have the confidence 4 years in, you will always question what you are doing in certain cases. It is medicine, it isn't perfect and is called "practicing" for a reason.
Now if you are in the clinic completely alone without any other DVM available to bounce questions off of, that is definitely not right, though I will say it happens. There should be support there. You really probably need to sit down with your employer and discuss what you are looking for with mentorship. A you asking questions and they are ignoring you? Are you a bit afraid to approach to ask questions? You have to voice what you want, people can't read minds and they won't know you are struggling if something isn't said.
Don't think you need to know everything immediately either, you can take the time to look stuff up. Clients are actually quite ok when you say "I really am not sure about x, let me go do some reading I will be back shortly."
Also, I know everyone mentioned VIN, but honestly, I never asked VIN questions only used it for searching things. I would post cases to certain facebook groups, they are quite helpful. If you want the names of those groups, send me a PM, there are a few that are specifically for posting of cases and getting input from other colleagues.