direct primary. a primary in which members of a party nominate its candidates by direct vote. Compare indirect primary.
I think unless you've had some medication in it with hCG lately (usually fertility drugs) that you are most likely pregnant. I don't believe there are any hormones that fluctuate with menaupose that would cause the false positive, hCG only rises with pregnancy and that's the only thing that the home tests look for. Hypothyroid medication wont affect the pregnancy tests.
Most false negative pregnancy tests occur when testing is done too early. You are pregnant but you test negative because there is not enough of the pregnancy hormone hCG in your body and especially your urine to be detected. Check your chances of being pregnant or not with a negative pregnancy test HERE.