You should get a blood test
done to exclude pregnancy
as well as get a sonogram including a renal scan and urine test. You can have spotting sometimes in early pregnancy when implantation
occurs but this does not continue. If you are having cycles of 28-30 days, and without contraception
, then you are more likely to be pregnant. Exclude urinary infections as well. HPTs are not always positive in early pregnancy as they are not so sensitive. Please see a gynecologist for further advice. Take care.