“Swallowing is hurting and nearly impossible?”

You might have an infection with a fever and changes in your tongue and bad breath. Something as simple as penicillin might help you.

Despite what you may have read in the Mother's Manual, "coated" tongue is of NO medical significance. The appearance of the tongue varies over time, and no one knows why. There are some patterns that can idicate underlying disease, but your tongue is within normal limits. Incidentally I do not recommend brushing the tongue, since it often leads to irritative symptoms. As for "hardly swallowing," I don't know what you mean. Generally a person either has dysphagia (trouble swallowing) or does not. If you weight is stable, your swallowing is likely okay. Anxiety due to stress is often the cause of subjective and intermittent dysphagia. Bottom line is that your symptoms don't point to any underlying disease. I recommend exercise for anxiety.

You may have fungal pharyngitis/esophagitis. i.e. Candida. Do oral rinses with baking soda, 1/2 tsp. in glass of lukewarm water. No alcohol, no sugar. See ENT for evaluation