A little reassurance

Good morning!

First of all TYIA. I found out that I was pregnant October 8th with a positive frer and digital. According to my last period I would be 7 weeks right now. I couldn’t help myself so of course a few days later I took another to see if the line was getting darker and it was. So, I made an appointment with OB and went in for it on Friday. I thought that it would be a little more involved than it was. It was only a urine test and a health questionnaire. They gave me a paper to go and get blood work done but said that it takes two weeks to get back. I was expecting to get blood work and have them call me within a few days to tell me that my hormone level was okay and things looked good. I scheduled a sonogram for the 8th of November and they told me that my blood work probably wouldn’t be back by then... I just feel so worried about miscarriage or that it’s even a viable pregnancy and I hate that by the 8th I’m going to have to have waited an entire month just to know everything is okay. So I guess my question is: at 7 weeks (if that’s accurate) would I know without a scan or blood work results back if something was wrong. What really scares me is that I don’t have too many symptoms. In week 5 I had some mild cramps and I’ve been extremely tired and more hungry and my breasts are definitely sore but some days more than others and I’ve been extremely constituted. And I think I had one or two days that I felt a little sick but that’s really all... anyways, any level of reassurance would be much appreciated...

thank you!