You shouldn't gain weight at this point in
a pregnancy. That is a myth that weight
gain is a symptom, it isn't a symptom
until later in the pregnancy ~ but they
then, it is pretty obvious you are
pregnant
Sore backs don't generally happen until
later also. They are due to the pressure
of the growing belly and they way you have
to walk to get around that belly.
All the things you have described can be
attributed to pms also. It is a cruel joke
mother nature plays on us women that early
pregnancy symptoms and pms symptoms would
be so similar.
Some women do get positive pregnancy tests
at the doctor's office after having
negatives at home.
The one thing you didn't say as a symptom
is very sore breasts. Girl, that is the
tell all right there! Your boobs will hurt
so bad, you won't want anyone to look in
their general direction for fear of that
pain.
I hope you get the answer you are looking
for.