Is your blood pressure supposed to sound different?

Sylvia

I went to the clinic yesterday and got my positive pregnancy results. While there they took my blood pressure and it was normal 124/80. She then tells me that it sounded normal and usually when a woman is pregnant it sounds different or skips a beat or something to that nature. Im 33 this is my first pregnancy, after trying for 15 months, I'm 4 weeks 5 days and have been worried since. Has anyone ever heard of this?