AUSTIN (KXAN) — After you get the COVID-19 vaccine, the Center for Disease Control and Prevention (CDC) has a tool to track side effects anyone could potentially feel.

It’s called the “V-safe After Vaccination Health Checker.” According to the CDC’s website, the tool is designed to engage with people as they get vaccinated.

“V-safe is a smartphone-based tool that uses text messaging and web surveys to provide personalized health check-ins after you receive a COVID-19 vaccination,” the website explains.

“Through v-safe, you can quickly tell CDC if you have any side effects after getting the COVID-19 vaccine. Depending on your answers, someone from CDC may call to check on you and get more information. And V-safe will remind you to get your second COVID-19 vaccine dose if you need one.”

It’s all done from your cell phone.

“It didn’t really hurt; it was sore for a few days afterwards,” said Austin medical tech Lillie Raybon. 

Raybon said she’s been doing virtual health V-safe check-ins since last week. 

“I signed up on the 24th; I got a notification on the 24th,” Raybon said. “I received my vaccine on the 23rd. And then I got another [notification] on the 27th. “

It’s not mandatory to sign up, but Tarrytown pharmacist Rannon Ching said it’s useful for the CDC to keep tabs on any unexpected or drastic side effects.

“They’ll ask just maybe like three or four questions,” Ching said. “With a little smiley face—[they’ll ask you to select], how do you feel today. [There’s a] green smiley face, a yellow, [representing being good, or just] okay. “Then there’s a red [smiley face]—like not feeling good. It’s just a really easy way for the CDC to really gauge how people are responding to the vaccine.”

The CDC website said you should get the texts for health check-ins around 2 p.m. everyday.

After getting the COVID-19 vaccine, you’ll have to go the V-safe website. This should be provided on an info sheet by your healthcare provider when getting the vaccine.

From there, you enter personal information, and it verifies who you are and your vaccination record.

Once you’re registered, you’ll get texts from V-safe with a link to report symptoms and how you’re feeling. It’s a voluntary service.