Cold or Food Poisoning

Yesterday I became sick.

Since I had a sore throat and a headache, I thought that I caught a cold.

Therefore, I went home early, ate dinner, and went to bed.

However, I woke up in the middle of the night due to a severe headache and a feeling of nausea, then I vomited all food I ate for dinner.

It was very painful because I woke up repeatedly with the headache and the nausea.

After I slept for about 18 hours, these symptoms were finally lessened somewhat.

However, my condition is still bad -- in such a day, I will post a simple diary like this.

風邪？食中毒？

私は昨日、体調を崩しました。

喉と頭が痛かったので、風邪だと思い、早めに家に帰って寝ることにしました。

しかし、夜中に目が覚め、激しい頭痛と吐気に襲われ、夕飯に食べたものを全て吐き出してしまいました。

何度も頭痛と吐気で目が覚め、辛かったです。

結局、18時間くらい寝て、ようやく症状が和らぎました。

ただ、まだ頭が痛いので、今日の投稿はこのような簡単な日記にします。

• Yesterday I became sick.
• Yesterday I became sick.

  This is fine, but usually we would say "Yesterday I got sick."

• Since I had a sore throat and a headache, I thought that I caught a cold.
• Since I had a sore throat and a headache, I thought that I'd caught a cold.

• Therefore, I went home early, ate dinner, and went to bed.
• This sentence is perfect! No correction needed!

• However, I woke up in the middle of the night due to a severe headache and a feeling of nausea, then I vomited all food I ate for dinner.
• However, I woke up in the middle of the night due to a severe headache and a feeling of nausea, then I vomited all of the food I ate for dinner.

  "a feeling of nausea" is fine, but not necessary. You can just say "I woke up in the middle of the night due to a severe headache and nausea." :)

• It was very painful because I woke up repeatedly with the headache and the nausea.
• It was very painful because I woke up repeatedly with the headache and the nausea.

  There's nothing wrong with the second "the" from a grammatical standpoint, but it's redundant.

• After I slept for about 18 hours, these symptoms were finally lessened somewhat.
• After I slept for about 18 hours, these symptoms finally subsided somewhat.

• However, my condition is still bad -- in such a day, I will post a simple diary like this.
• However, my condition is still bad -- on such a day, I will post a simple diary like this.