You are not obliged to eat what you mentioned, I avoid saying or writing the word unless I absolutely have to.
You could become vegan. I did years ago. I have never been happier.
www.vegansociety.com/
You could if you wish become vegan overnight, but many people transition, perhaps vegan food on each Tuesday, then maybe two days a week, and eventually becoming totally vegan.
Some vegan food is made to be a vegan alternative to animal exploitation products, looks like, tastes much like, but actually I avoid those things as I don't want my food to look like animal exploitation products.
No animal died in the production of my food.
Best to inform the doctor, if you have a blood test ask for B12 to be included, it is not only vegans who can be deficient in B12, but I think that B12 is not usually routinely checked for anybody unless they get bad symptoms. I asked and it was added in, no problem.
The vegan society has a policy (I checked before I joined) of never showing pictures of animals being hurt or abused. All their pictures are of animals who are safe in sanctuaries.
Being vegan is wider than just food. Things like avoiding wearing wool and leather if possible. Avoiding cosmetics and toiletries that use bits of exploited animals.
In this world there is often a presumption that people will accept animal exploitation as normal, but there is no need to be a fellow traveler with that if you choose not to be.
You don't need to go out campaigning or declaring yourself to be a vegan as the mainstream stereotypes suggest.
For me it is not enough to be vegetarian, they accept the dairy industry. Vegans don't.
Vegans need to be aware of getting enough vitamin B12, but there are many fortified products, like many of the Alpro range of products, many of which are good for protein too.
Recent case law has made being vegan a protected belief.