Could the FRY still be stuck in my throat?

No, not from that long ago. The saliva would have broken it down by now. Plus, I assume you've eaten since then, and everything else is getting through just fine. It could be you scratched your throat a bit and that's what you're feeling.

It has merely scratched your throat IMO and will go away in time.

No likely.
Something STUCK in your throat will either cause you to gag and vomit (if it is stuck high enough in the throat), or if it has gone into your bronchial tubes, you will cough and gag until you bring it up.

MOST likely, this unchewed fry scratched at your throat.
Or this is something else entirely (like an infection) that just HAPPENED to happen coincidental with this fry-incident.

If it does not go away in a day or two, go see your family doctor.

No. If it feels like something is stuck in your throat and the feeling doesn't go away, see a doctor. You could have an infection or something else that needs to be addressed.

no

This may sound odd, but grab a flashlight and look in your throat. It's possible you have a tonsil stone. It'll look like a little white blob. I thought I had a popcorn kernel in my throat for days, but it turned out to be that. You can press it out gently by pressing the area around it with your finger or a qtip.

no. it's a cancerous tumor caused by overconsumption of junk food.

no... its most likely just a scratch caused by the fries

Nope

NO. The fries would have goten soggy and started to dissinegrate and when you ate and drank other stuff it would push it down.

Find something else to cause you to need attention.

it would have became soggy and disolved in your saliva within only a few hours. the feeling that you're experiencing could just be anxiety from the idea of choking.

No, it would have dissolved by now. What you feel is probably some irritation caused by the fry (which is now all gone).

go see your doctor

This is a classic symptom of reflux. See a doctor.

take a look in the mirror and see if its still there.
I bet what happened is a sharp edge of a fry scratched your throat. If you have a real concern, go see your doctor.