pregnancy and TDAP vax?

Anais
This is my second pregnancy, and I guess now we are encouraged to get the tdap vaccine. I asked my doctor why, I didn't have to with my son 5 years ago. He basically said bc of all the anti vaxers whooping cough among other things are coming back! 😡 I can't help but be annoyed! Has anyone else had a doctor recommend this? I have mine scheduled in 2 weeks...