I haven't eaten all day except for lunch, then like 3 hours later I puked. I'm like starving right now lol, but I heard you're not supposed to eat anything solid after you just threw up? Is that true? Also, I've been coughing up phlegm lately, if that means anything.
After I vomit, i usually drink water or eat something small.
Go eat. Simple carbs are best. Bread or toast. Plain rice. Fat will challenge your system more. Red meat would be a bad idea.
If you think you can hold it down. Soup would be good to start with.
It's OK to eat, but don't woof down any gut grenades. Eat some Jello, a banana, even a lean hamburger. Drink some Gatorade