Help! erosions in stomach

(17F)
I'm very nervous, I had an endoscopy yesterday (I have a fundoplication tomorrow, and I needed to do some tests before it) and they found several pinpoint erosions in my stomach

Im scared because i dont know how they even appeared, im on the blandest diet ever, i dont take any medications that can irritate the stomach and i eat every 3 hours

The only thing is, before the endoscopy, I didn't eat for 18 hours and I was very stressed (the last time I ate was at 7, the endoscopy was done at 1 pm the next day)

I hadn't eaten for so long and was nervous because I didn't even know there would be an endoscopy. They only told me when I arrived and made me wait, i hate this hospital:(

i just need support, im scared and i dont know what to do with these erosions, im scared that they would heal very slowly:(