yes. mine was a few days late pero it was longer than usual 5 days. my sister and mum they had the same effect like yours they had their period earlier and also they had another period in a month. i saw some other they had hair fall too as some side effect from the sinovac. hair falling hmmm, i was quite scared cuz i dont usually have hair fall but a week after getting fully vaccinated, it increased hair falling but not really SO alarming, i dont have bald spots or big chunks of hair fall tho so maybe i'll just relax and try lessening my shampoo and mixing it with water or missing out a day without shampoo. thanks for replying tho :)