@twotone This isn't exactly what you asked for but there is a growing body of evidence that Covid can cause potentially substantial effects on female repro systems, hormone signalling, etc. Here's another piece that's coming into focus, #Covid causing menopause: https://www.statnews.com/2023/10/20/long-covid-menopause-research/
That article also mentions other menstrual changes post infection.
I remember reading early articles about how COVID-19 (and maybe COVID vaccines?) might affect periods, and I even filled out some questionnaire about it for someone who was doing research, but I don't remember what the conclusions were, and whether there's any connection to the unusually painful cramping I've been having this week.