There can be several reasons for a positive home pregnancy test (HPT) but negative doctor's pregnancy test and blood test. One possibility is that you took the HPT too early, before there was enough hCG (pregnancy hormone) in your body to be detected by the doctor's tests. It is recommended to wait until after your missed period to take an HPT for more accurate results.
Another reason could be a false positive result on the HPT due to factors such as an expired or faulty test kit, improper usage of the test, or certain medications that can interfere with the accuracy of the results.
Additionally, it is possible that you experienced a chemical pregnancy, which is an early miscarriage that occurs shortly after implantation. In these cases, hCG levels rise briefly before dropping again, leading to a positive HPT followed by negative tests.
Other potential causes include an ectopic pregnancy (when the fertilized egg implants outside of the uterus), hormonal imbalances affecting hCG production or detection, or issues with laboratory testing errors.
To get a clearer understanding of your situation, it would be best to consult with your healthcare provider who can perform further tests and provide appropriate guidance based on your specific circumstances. They may recommend repeating the blood test after a few days or conducting additional diagnostic procedures if necessary.
Remember that stress can also impact your menstrual cycle, so it's important to try and stay calm while awaiting further testing.