Marla - sorry to hear about your worries. What your experiencing (loss of symptoms some days and cramps in early pg) sounds really normal. I'm with you on the detached view and being neurotic.
I've not been posting because I don't really want to feel properly engaged in the pg until I'm out of the 1st trimester. I've have been having pretty much the same worries as most of you re the lack of symptoms. With DD I had a pretty easy pg but at this stage had a really odd sense of smell, needed to eat carbs all the time to stop feeling sick (but was never actually sick), had really hot flushes and sat in work in a vest top with the windows open in Dec (I have my own office!) and my boobs were so sore I'd wake myself up in the night if I turned over onto them. They were all really obvious pg signs.
I should be 10 wks today by LMP but am generally feeling pretty much normal and have been pretty much all the time. Have been getting up for the loo in the night (sorry TMI!) but that may be because I'm trying to drink more fluids. Have been incredibly tired but that may be because I'm getting over a cold and I'm getting up in the night to go to the loo! Boobs hurting a bit on the sides if I press them but that might be because I keep pressing them! Had quite an obvious tummy a couple of weeks ago but that seems to have gone now. I did have a really tiny amount of bleeding two weeks ago but that seemed to be external and the mw was not even slightly concerned about it. I have been really stressing about it and repeatedly googling unhelpful things. Scan 2 wks tomorrow so probably too late to be worth booking a private one now.
My rational self says that there is just nothing you can conclude from it. Loads of people have no symptoms and really healthy pregnancies. Some people carry on having pg symptoms and then sadly discover they have had a MMC at the scan. In any case if anything has/does go wrong there's nothing you can really do to prevent it so there's not point in worrying... my irrational self on the other hand...
sorry that is now a mammoth post but it is nice to let out the stress a bit!