Throat Phobia. To normal life again?

I had a situation where a bit of food got stuck in my throat. I could still breathe but it caused a tickle in my airways and I just couldn't free it and it started making me gag loads. Eventually it went. But ever since then I've had a huge fear of it happening again that it's caused me extreme anxiety. The phobia has now developed into not just that happening again, but now almost any sensation in my throat causes instant anxiety to kick in. As I'm scared of anything that need me to clear my throat because my gag reflex has because so sensitive and I just can't cough anything out because it causes me to gag and the idea of getting a chest infection or anything throat related gives me extreme anxiety. Also, it's impacted me on eating. I barely eat anything now because I have this constant fear and I can feel that I'm hungry but I'm too scared to eat and I fear that I'm damaging my body by not eating but don't know what to do to fix it and get back to normal life again?