Has anyone had their pregnancy symptoms go away at or around 6 weeks?

I am 6 weeks today. I had a pregnancy test from the dr's. Office at 5 weeks that came back positve. I also my hormone levels & progesterone levels tested durng my 5th week.
Hormone levels 9,689 (good)
progesterone levels 15.4 (good – wanted to see above 10)

i have only had one time that I experienced spotting -- I only saw it once when I went to the bathroom -- it was very light spotting and brown in color. I believe it was from implantation. I have not had any other spotting since then.

I had cramps from the time I expected to have my period up through the 5th week -- then they went away. I also have had back pain.

I started feeling my breast get sore -- actually seemed more like my breast plate -- deeper down. But that has gone away. That concerns me. I would have thought my breast would continue to get sore to the point where it hurt if you gave me a hug. I'm not feeling that and the breast soreness has went away. I'm wondering if that is a sign that miscarriage is coming ... Although i'm not having any bleeding or cramping.

I have felt dizzy/light headed -- sometimes my face feels hot/flushed. Usually I feel like that when I wake up and haven't had anything to eat. I didn't eat breakfast right away this morning -- and I didn't feel flushed or dizzy. I'm again wondering if maybe my hormone levels are going down.

Anyone experience anything like this? If so, did you have cramping/bleeding anything before/after this happened? I haven't had the cramping or bleeding -- not sure if i'm just freaking out of if this is the first signs of miscarriage.