My girlfriend and I had sex right after her period ended. I gave her Unwanted 72 after 48 hours, and then she got her period about a week later. She also had a blood test which came back negative. Now, about a month later, her period still hasnt come, but shes feeling pain and something moving in her stomach in a circular motion. Can you help me understand why this is happening?

Delayed Menstruation and Unusual Symptoms_Symptoms_1. _Delayed menstruation_: Menstruation is overdue.2. _Abdominal pain_: Experiencing pain in the stomach.3. _Circular motion sensation_: Feeling something moving in a circular motion in the stomach._Possible Causes_1. _Pregnancy_: Despite the negative blood test, pregnancy is still possible.2. _Hormonal imbalance_: Changes in hormone levels can cause delayed menstruation and unusual symptoms.3. _Ovulation issues_: Irregular ovulation can lead to delayed menstruation.4. _Stress or anxiety_: Stress and anxiety can affect menstrual cycles and cause physical symptoms._Recommended Actions_1. _Take a home pregnancy test (HPT)_: Repeat the pregnancy test to confirm the results.2. _Consult a gynecologist_: Schedule an appointment with a gynecologist to discuss symptoms and determine the cause.