I had a light period and pregnancy test is negative but symptoms like morning sickness could be?

It is possible to experience symptoms of pregnancy, such as morning sickness, even if your pregnancy test is negative. This can be due to several reasons:

Early pregnancy: In early pregnancy, the levels of the pregnancy hormone human chorionic gonadotropin (hCG) may not be high enough to be detected by a home pregnancy test. It may take a few days or weeks for the hCG levels to rise sufficiently for the test to become positive. If you are experiencing pregnancy symptoms but your test is negative, you should consider repeating the test in a few days or having a blood test done at a doctor's office to check for pregnancy.

Ectopic pregnancy: An ectopic pregnancy occurs when a fertilized egg implants outside the uterus. This can cause symptoms similar to a normal pregnancy, including morning sickness. However, an ectopic pregnancy is a medical emergency and requires treatment. If you experience severe abdominal pain or bleeding, you should seek medical attention immediately.

Other medical conditions: Some medical conditions, such as certain gastrointestinal disorders, can also cause symptoms that mimic those of pregnancy. Morning sickness is a common symptom of conditions like irritable bowel syndrome (IBS) and Crohn's disease. If you are concerned about your symptoms, it is important to see a doctor for a correct diagnosis.

It is also worth mentioning that some medications and even stress can cause symptoms that resemble those of pregnancy. If you are unsure about your symptoms, it is always best to consult a healthcare professional for proper evaluation and guidance.