humaworm
Drink more water or eat a little something to help with the heartburn.
Die-off can vary - for some folks it starts on day 1 - for others - it can be day 28. The average for the average cleanser is around day 14 or 15.
The more infected/toxic a person is - the sooner die-off will happen. The cleaner a person is - the more delayed any die-off reaction will be.
Long time cleansers have no reaction at all - even if the first 1 or 2 cleanses were rough.