Brief Answer:
They can be connected to each other. Kindly read answer below.

Detailed Answer:

Hello,

You can have tonsillitis like posterior pharynx inflammation. It can lead to vomiting of acid containing food.
You can have associated acid reflux history.

During threw up acid containing foods, you might have forceful pressure that can lead to injury to tonsil and collected blood can give purple color.

I suggest you consult physician for posterior pharynx examination. You can be prescribed anti emetic and Antacid drug course.

Hope I have answered your question. Let me know if I can assist you further.
Regards

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Brief Answer:
It will go away within 4-5 days. Excess Hot foods should be avoided.

Detailed Answer:

Hello,

The discoloration will usually go away within 4-5 days approximately.
Meanwhile you have to take precaution regarding not take excess spicy and oily foods.
Excess hot foods also should be restricted.

Avoid smoking until you recover, if having habit of it.

You can drink lots of water. Orange juice, Apple juice etc., like fruit juice can be consumed more. Salt water gargle done two times a day.

You can Consult physician for posterior pharynx examination and accordingly get prescription of anti emetic and Antacid drug if needed.

Hope I have answered your question. Let me know if I can assist you further.
Regards

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