So in love!!!

Im 7weeks 5days n won't be able to see a doctor until im 13-14 weeks but my sister has two children n a Doppler n i thought why not see if we can find the heartbeat, after a long minute of not hearing anything I HEARD MY BEAN! I instantly started bawling, heartbeat was at 135-140 it kept going up n down but its there n strong!! Im so happy! I was so worried that my bean wasn't where he was supposed to be or he wasn't growing but the heartbeat put all my worries to rest for now! We could only hear it on (my left) the left side of my uterus, so i wonder if that tells the sex? My sister says girl, so I'd love more input! We took a video n sent it to my SO n he called crying, he said it was the best noise hes ever heard in his life! Im so happy!!!