I’m a 16 years old girl and the only thing I worry about is B12, and vitamin D (only in winter) so I take supplements to make sure. But you don’t need to worry about anything else. I increase a lot my levels of iron, with an omnivore diet, I was anemic and now I have 3 times more iron than the average (which is incredible). So don’t be afraid! I’m Spanish so, sorry for my mistakes. 🙂