Anxious/nervous! LONG! Babble. Sorry.

So to start, my LMP was April 29th, I ovulated may 23rd, had an ultrasound on July 12th at what my dr thought should've been about 11 weeks, turns out I was measuring 7 wks 2 days, and "there was no heartbeat" I say that in quotes because they were wrong for my son as well. He was born approx 3 weeks early when they thought I was over due by a week simply cuz he was big. But the radiologist (I'm thinking they've found cancer, geez) say the fetal pole was so big and there was no heart beat which always means miscarriage. Saw my dr today, had more blood work done, they're scheduling me for an ultrasound next week sometime, she felt my uterus told me it felt like a normal pregnant uterus and not like it was all knotted up like a miscarriage uterus feels and I don't have any cramping or spotting had some poking near my hip bones shortly after my +opk and now I'm having sharp pulling on my right side that sometimes happens cuz my uterus is retroverted and sits more to my left side than center, and I'm really hoping it's simply ligaments stretching. I was also laying on my stomach when it happened. My dr even said to me she'd feel better if we could hear a heartbeat. I'd love to hear a strong fast heartbeat. It would out my mind at ease. I am going to be so happy when I go for my ultrasound and hear that it's growing bigger in a week. I know there's still the chance of loosing it but I'm still going to be nervous until the ultrasound.