Baby's heart beat is fast..

So with this being my first pregnancy, I don't know much about what the heart beat should sound like besides being faster than mine. And I've never heard the heart beat at the doctor. But this morning I was able to find it on my home Doppler!! 😄💕 and a friend of mine told me it was fast. I guess compared to hers? Is that a myth of being a girl or boy? It didn't pop up the rate of the heart beat so I'm not sure how fast or slow it was.