dear user. welcome to healthcare magic.
the blood test
is much more sensitive than the home urine test. So the first thing to do in your case is to have a quantitative hcg
test in you blood.
if the test is negative consider this as an abnormal event that happened due to any reason (stress
for an example), and wait for the next cycle. if the test is positive, you should visit your doctor as soon as possible to identify the cause of bleeding and to exclude ectopic pregnancy
Although pregnancy is a remote possibility but it should be excluded.
I hope these words were useful to you.
dr. Ahmed Bahaa.