ABSTRACT
Background: Many women worldwide have reported abnormalities in their menstrual periods after receiving COVID-19 vaccinations. This research aims to determine the prevalence and the relationship between COVID-19 vaccine and menstrual abnormalities among Saudi and residents women aged 18 years and older in Saudi Arabia. Method(s): This is a Cross sectional questionnaire based study collected through an online questionnaire from Saudi and Resident women post Covid19 vaccination .The sample include women age from 18 years or older, while excluding unvaccinated women, or women living outside Saudi Arabia . Result(s): A total of 419 female participants were involved in this research with a mean (SD) of age 25(7.4). Among the total study participants, the prevalence of menstrual abnormalities was 20%. The number of doses received as well as the vaccine type were not significantly associated with having menstrual abnormalities. A strong significant association was found between menstrual abnormalities and having the period in the same vaccination day (P<0.01) in which 33% resembling a total of 26 participants out of 79 females who received vaccine at the same day of vaccination experienced menstrual abnormalities. Conclusion(s): Although there was no significant association between receiving covid19 vaccine from any type and the number of doses with menstrual abnormalities but there is a strong significant association found between menstrual abnormalities and having the period in the same vaccination day.Copyright © 2022 Wolters Kluwer Medknow Publications. All rights reserved.