I’m scared :(

Hi I’m 17 years old female and I went to the doctor because I’ve been nauseous everyday after before or even when I eat for almost 6 months already I went to the hospital they did a ultra sound and blood test it turned out I had gastritis so they gave me some acid reflux medicine and some pills to take for a week I still feel horrible every morning I wake up feeling like shit my stomach always makes these gurgles sounds I never wanna eat but I’m so hungry I’m going to the doctors tomorrow I just feel like there’s nothing I can do I feel so lazy and sad and wanna cry all the time and I have the biggest fear of throwing up so when I get nauseous it’s the worst for me :( please help what do I do I’m really giving up