Aww. This is so very stressful. I tied myself in such knots and felt so bad that it really took the shine off my first pregnancy. However, despite my v severe hyperemesis gravidarium, I produced two great children.
My first was better than my second, but dear love her, my daughter was grown primarily on salt and vinegar crisps from 6 weeks to 24. Honestly, it was awful. I spent long periods lying down, but had an older child who needed to go to school etc. I had to tell people I was pregnant earlier than I would have liked because I was caught so many times vomiting in bushes, into gardens etc just doing pick-up and drop off. I was worried what people might be saying!
Once I could tolerate food other than crisps, I wanted chips. Not my own airfried ones. No, just salty McDonald's style French fries. I am not a McDonald's person, but if I go, I just have a chicken mc crispy. I wanted them nearly every day. I woke at night and fantasied about big macs. I have never had a big mac, so wtf?
So I would say, chill. Eat what you can. Take good supplements.
I kept getting told that the growing baby will just take your nutrients, so don't worry about them, they will be grand. What you need to do is protect your own health.