Can an ovarian cyst cause a negative blood pregnancy test?
Definitely not. The only thing that will cause a negative pregnancy test is no HCG in your blood which means you're not pregnant.
You are sexually active and you have tested negative for pregnancy Why are you not having your period?
Your test sHow is negative but the ultrasound sHow is sperm in egg but not attached to uterus what does this mean?
You could have had a false negative pregnancy test or If the egg is not attached to the uterus It could mean the fetus will not survive so that's why it would have came up negative or its a tubal pregnancy which means the fetus is forming in the ovarian tubes which could cause miscarrage or VERY complicated pregnancy
No. The only thing that will cause a negative pregnancy test is no HCG in your Urine. A pregnancy test will only become positive when HCG has been detected in your Urine. If it does not become positive then no HCG has been detected. Test in a week and if it is still negative then see your doctor for a blood test or confirmation.