thanks for using health care magic.
i have gone through the available history. I think you just have some sort of stomach infection
which may be a cause of stomach sensation as well as diarrhea
. and because of diarrhea, you might feel weak and dizzy.
as you have done 16 pregnancy tests
, and all are negative, chances of pregnancy are nil.
I hope you do not have pseudocyesis(False Pregnancy
You should consult your physician and should get treatment for the same.