This month I underwent artificial insemination because my husband's sperm quality was not good. There was no

Patient's question:

30 years old
Detailed medical history and consultation purpose: My husband has A-grade sperm at 30%, and we did artificial insemination this month, but it was unsuccessful. The main question is, my menstrual cycle has always been regular, but why did it delay by 3 or 4 days after the surgery?
Current general condition: Menstruation with dark red blood clots
First follow-up question: Have I ever had a menstrual delay this long? It's very painful when it comes. Pre-surgery tests before artificial insemination were normal. I want to ask whether there are other reasons, besides menstrual delay, that could be causing my inability to conceive successfully?

Doctor's answer:

Delayed menstruation is a normal phenomenon, no need to be nervous.