If the ovulation test paper test is negative, it may mean some problems. While dipstick testing is a reliable method, not all cases will result in a negative result. Here are some possible reasons for a negative result:

2. Incorrect test time: The best time to test with a dipstick is during your first trip to the toilet in the morning. If the test time is incorrect, the results may be inaccurate.

3. Pregnancy: If you are not pregnant, a negative test result using a test strip is probably accurate.

4. Other diseases: Certain diseases may cause negative results, such as AIDS, hepatitis, etc.

5. Medications: Certain medications may cause negative results, such as antibiotics, antidepressants, etc.

Therefore, when using test strips to test whether you are pregnant, it is best to test when you first go to the toilet in the morning, and read the instructions carefully to ensure the accuracy of the test results. If the test result is negative but you are not sure whether you are pregnant, it is best to seek advice from your doctor or other professional.