Tdap Vaccine Question

This may sound like a stupid question but, I’m genuinely curious. So, I know they recommend you get the Tdap vaccine in the third trimester so that your baby is protected from whooping cough. I am considering getting it for that reason, but it’s supposedly for tetanus also, and I had already been re vaccinated for my tetanus shot, since it wasn’t that long ago that I was due for it. My question is, would it effect that in any way if I took the Tdap, and basically was vaccinated twice for tetanus? Or should this just be something that I ask my doctors about?