Late periods with Moderna

I got one shot of Moderna and had a mild reaction back in March decided not to get the 2nd. ever since my periods have been 5+ days late. This time my period is day cycle day 41 with no end in site.

Anyone else having a weird issue with cycles since a vax? I seriously regret taking it. People have said “Oh it’s probably a coincidence” but I always track my periods religiously and I can tell you for a fact that only like once a year was my period missed or even this late and now it’s like every month. The only change has been the vax.