179beats a min! does this mean 💗??

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Hello ladies! I just went for my first ultrasound and I am 8 weeks along . The heartbeat was 179 a min which the tech commented was fast . Ppl say the faster the heartbeat the more likely a girl. Lower is a boy supposedly . I just wanted to know what results all of U got?? Any of u had babies that followed the rule ? Or no? 
Thanks for answering guys !! Just curious how accurate it was :)