Flu Shot

First time Mommy here... due 12/12... was told I should get a flu shot by my dr because im a teacher... I have never gotten one before and am kinda afraid of getting sick because of it.. (I have heard you can actually get sick because of getting the shot...) thoughts? Are you going to get it? I am going to get the TDAP shot l just wasn’t sure about the flu shot. I’d appreciate any and all thoughts!