I can't eat

In the past, i used to have a lot of issues to eat, i could spend up to 3 days with no food, it was almost a year of that, i faked that i eated, giving everything i could to my dog and trowing up after eating, but that was years ago, sometimes i have issues eating, i am hungry and i just try to ignore it and then i remember that i can eat and it will be fine, other times maybe i skip a meal, but this last weeks Ive been eating less and less, like this week Ive eated just 5 times (In almost 6 days) and i don't know why i feel like this, i am scared to eat, i feel like i don't deserved that food :( Anyone have any tip to eat?