thank you for your query.
Firstly, it is not necessary that every pregnancy
should be the same.
Breast tenderness, aversion to certain smells and cravings for certain foods are all subjective symptoms, and no lady experiences the same symptoms everytime she falls pregnant.
So please do not worry on such grounds.
Again, absence of symptoms COULD rarely indicate a failing pregnancy.
However, there is no way to know unless and until you have your scheduled ultrasound
I would ask you not to worry until then.
Also remember that stress
are major causes of miscarriages, so please be positive.