Watch cycle predictions after chemical pregnancy
I just had a chemical pregnancy and my watch isn’t predicting my next period. I have updated the information needed and it still won’t make a prediction. How long until it does?
Apple Watch Series 8
Question marked as
I sympathise for your loss. You really should ask your doctor when to expect your next cycle, but I would think the Watch needs to establish at least one regular cycle before it can predict further ones based on your entered data.
See also Track your period with Cycle Tracking - Apple Support. "How predictions are calculated"