anxiety about losing weight

[u/InterestChoice6013]

I'm 22F, 168cm, 49.5kg. My bmi is around 17.7 so it's too skinny for me, and I'm worried. I don't eat too much because anxiety makes me very cautious of food and also makes my stomach feel sick constantly. Three or four years ago when I was still a teen, I weight around 60 kg (I wasn't so anxious at that time). I feel like right now I'm too skinny and it would make me weak and easy to get sick. I'm very worried about this, but I tried to eat more, it hurts my stomach and makes me worry about my stomach or having to puke.