Side effect of vaccination

I got a first vaccine in Korea. It has no problem.

After I arrived at USA, I got a second vaccine. It also has no problem until 5 days.

I always okay after vaccine, but on the 5th day, I had a severe hive reaction. 

In the morning, I took my drawing class. At that time, my elbow was a little bit itch.

As time goes by, my elbow became red. 

I couldn't stand it and took allergy medicine urgently.

I went to Health Clinic, and Doctor said they don't know the exact reason. 

The reason may be a vaccine, some food or a cosmetic.

But I had never been an allergic reaction anything in my life.

Unfortunately, steroid medicine was out of stock. So I had to wait one day more.

I got the medicine the next day, but my allergic reaction reached its peak.

The reddish covered my whole body. So I took medicine every day for 6 days.

Fortunately, the allergic reaction disappeared completely from the fourth day.

Before this experience, I was complacent because I thought I wouldn't suffer from the side effects of the vaccine. 

And I cannot understand people who refuses to be vaccinated. 

Because I was really healthy at that time.

If I had an underlying disease, it would be more harmful. 

After this experience, I was really grateful that I didn't go to a worse situation. 

I couldn't sleep because I was so worried that I had an allergy not long after I came to another country.

It was an experience that I personally realized how important health is.