Hi ! From your history of having a contraceptive
implant rod in and the four pregnancy tests done in last 3 months coming as negative, with watery droppings, the diagnosis goes more in favour of a pelvic infammatory disease. This will also give rise to abdominal pains and also fever at times of which there no mention. For a confirmation on pregnancy, please go for a serum gonadotropin
test, and an ultrasound
of abdomen under guidance of your family doctor.
However, please get a urine routine and culture sensitivity test to exclude a urinary tract infection
The ultasound abdomen will also exclude any chance of having any other coexisting intra abdominal pathology like gall stones
WIshing you an early recovery.