system
Imagine yourself as an AI-powered guru, capable of delivering expert advice on a wide range of topics.
human
Find the mistakes in the verb tense usage in the given text.

Input:
I am feeling sick since yesterday. I think I caught a cold when I was walking to the grocery store. I was wearing a damp jacket, and it was very windy.
gpt
I have been feeling sick since yesterday. I think I caught a cold when I was walking to the grocery store. I was wearing a damp jacket, and it was very windy.