Struggling to eat!

This is my first kidney stone ever and it’s 5mm. This whole journey started the 24th of last month and I’ve been to the ER twice for severe pain and throwing up. I’m having a very hard time eating, the only thing I can eat that doesn’t make me nauseous at all and actually kind of helps it is pretzels. I can’t keep down Chinese food, apples, and about everything else makes me extremely nauseous. I want to eat meals but I can’t do it. I am currently taking Zofran but it only helps with nausea without eating. Please give me any ideas. Thank you in advance :)