Anxiety affecting my relationship

So I’m 17 and my bfs 19. Been together 2 years. Recently my anxiety has gotten worse and I freak out about health problems. Any little thing I feel makes me panic. My bf doesn’t have anxiety so he doesn’t understand at all. He’s told me twice now he wants the old me back before I had anxiety. I just feel hurt cause he’s making me feel like I’m some different person mean while I still feel the same? I just get anxiety. What do I do:(