My last period was on July 27, 2021. On August 11, 2021, I got the first Covid vaccination (Astrazeneca). But when my period was on August 27, 2021, I did not have my period and until now, September 8, 2021, I still have not had it. Previously, my period was quite regular, if there was a difference, it was only a few days. I bought a test kit and I was not pregnant, and my last gynecological examination on July 19, 2021 was normal. So, doctor, can you tell me if my late period is a side effect of the Covid vaccination? Thank you!

My girlfriend got the first dose of the Vero Cell vaccine 12 days ago. After the injection, her period was delayed for almost 7 days. Doctor, can you tell me if it is okay to have a late period after getting the Vero Cell vaccine? Thank you, doctor.

I am 19 years old this year. Last month, I had my period on February 15, but suddenly in March this time (ie March 15), my menstrual cycle has passed for a few days and still has not. I've never had sex with anyone