My friend has a marina and is showing all symptoms of pregnency... could she be pregnant? She keeps taking pregnancy tests they all say negative what should she do

Well, there is this confusion. Meet the doctor and have full check up or ct scan it will give clear results.

A lot of the symptoms of pregnancy can be symptoms of other things. You may need to wait and see if her next period comes. If it doesn't come at all, have her try another pregnancy test with first morning or visit a doctor.