Hello Good Evening,
You have not described about your obs. history i.e. it is your first pregnancy
or not, and you also not mentioned your previous menstrual history.
As per your description, your pregnancy can be a an-embryonic pregnancy or blighted ovum
You should have brief knowledge about blighted ovum:
A blighted ovum occurs when a fertilized egg implants in the uterus but doesn't develop into an embryo, though, the pregnancy sac forms and grows, but the embryo does not develop and it is a leading cause of early pregnancy failure or miscarriage
In this there are signs of pregnancy:
-positive/weak positive pregnancy test or a missed period,
followed by signs of a miscarriage:
-Vaginal spotting or bleeding
-A period that is heavier than usual.
Urine pregnancy test can be negative or weak positive, so an ultrasound
is needed to diagnose a blighted ovum -- to confirm that the pregnancy sac is empty.
In ectopic pregnacy there is severe pain
and clearly positive pregnancy test.
So repeat UPT after 3 days then go for a USG and followed by consult to your gynecologist.
Dr. Naresh Jain