Ob-Gyn questions? Ask a gynecologist online.
the menstrual cycle is a very sensitive process and affected by many influences. So period easily can be delayed without a serious reason. I would suggest a pregnancy test, if the result is negative, you should await the further process.
Dr. N. Scheufele
Yes, that´s a possible reason, infections can have an effect on the hormonal cycle.
This can happen every now and then without a serious background. Investigation would be required if bleeding doesn´t start within another week.
Stress has an influence too. It´s no reason to worry for sure, just await the further progression.
This should be done if bleeding doesn´t appear during another week.
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Thanks a lot, all the best for you,