Need some advice please? I’m nervous

Im currently right around 5 weeks and I went in for an ultrasound that my OB put in an order for. So I go in, she can’t get what she wants from the traditional ultrasound, so she does a transvaginal , then a traditional one again. She tells me right now she can’t find a fetal pole and that they’ll probably have me come back when I’m further along. I go upstairs to my OB after my anxiety skyrockets and ask them wtf is going on, and so his nurse then reassured me that it was most likely because I’m so early on and the baby is still so small that they can’t find both the sac and heartbeat TOGETHER, and that’s what’s needed to be able to say there’s a fetal pole. So she said i should be fine. My hcg a week ago was 149.5 and two days after was at 428.4. I just did more bloodwork that was ordered after my ultrasound and haven’t gotten results yet. Am I going to be fine with this pregnancy??? It’s just weird they wanted an ultrasound so early and want so much bloodwork. With my previous two I was told I had to wait til 12 weeks for a first ultrasound and I barely did any bloodwork. I’m so nervous now that I wasn’t able to see much. I seen on the screen what looked like the sac and everything but I’m just so nervous and now so sore from the transvaginal that I’ve just bummed myself out today. I’m sorry I just needed to get all this out in hopes someone will give me some piece of mind. My OB’s nurse did, but I’m still so uneasy.