ふふふふふ！

Darling　よし坊！

マオリン　Just go and visit 医者、cos I have constant cough　
（咳）ー＞　Is this the right character for cough? へへへへ！
I have taken the medicine, I will feel better.　マオリン　
This morning study meeting, my role is emcee, I informed
my YWD zone I can't be emcee today cos my sore throat and cough.
I feel abit bad..

There is bookfair at culture centre! I am going libary now
to return items then to culture centre. Will be back shortly, 3pm!

またね！

愛

咳 is correct!
A mode of expression about an symptom of throat:
喉が痛い！
Nodo ga itai! I have a pain around my throat.
喉がひりひりする。
Nodo ga hirihiri suru. My throat becomes swollen.
咳が出る！
Seki ga deru. I have a cough.
声がかすれる。
Koe ga kasureru. I have raspy voice.
痰が出る。
Tan ga deru. I hock a loogie.

だいじょうぶ？
早く良くなってね！　Hayaku yokunattene! Get well soon!