I think your worries are really normal. Try and hold onto the fact that you had a good result at 6 weeks. My symptoms were a bit the same. I had sometimes really bad cramping at night and had to use a heat pack. I had no morning sickness until week 6 and it began to stop at week 10. I only felt nausea and didn't vomit. I never had sore (.)(.). I know that lack of symptoms can be anxiety provoking but plenty of women don't have many and they are fine. Symptoms seem to be so individual and related only to that pregnancy.

I was terrified before every scan including my 20 week one, so in my view your worries are normal. Wishing you the best of luck.