Hello I am 17 years old I always get feelings of dizziness, anxiety, fatigue, lightheadedness, shakiness and numbness and nose/head pressure.

I do not know what is wrong with me but I really want my life back I have been feeling like this off an on but it is mostly occuring. I am vegan and have been taking vitamin B12 and Iron. I have a twin sister who eats the EXACT same things as me and doesn't even take those vitamins and she feels completely normal.. someone please help!