Covid-19 vaccination associated with change in menstrual cycle length (Edelman et al., BMJ), Quejada (Women's Health SAGE journal) was very declarative on impact to menstrual cycle and disturbances
by Paul Alexander
But do not fuss you ladies out there, do not fuss, the researchers found and document the damage by the vaccine but claim it is "likely to be temporary change in menstrual cycle length"
SOURCE 1:
https://bmjmedicine.bmj.com/content/1/1/e000297
SOURCE 2:
https://journals.sagepub.com/doi/10.1177/17455057221109375
