|You should wait until you are clear of symptoms and Public Health has cleared you from self-isolation before receiving the second dose.
NACI guidelines state:
As a precautionary measure and in light of the need to be able to monitor for COVID-19 vaccine adverse events without potential confounding from symptoms of COVID-19 or other co-existing illnesses, it would be prudent to wait until all symptoms of an acute illness are completely resolved before vaccinating with an authorized COVID-19 vaccine
NACI guidelines state further:
If the administration of the second dose of a COVID-19 vaccine is delayed, the second dose should be provided as soon as possible. Currently, no data on a maximum interval between doses or on medium- or long-term efficacy of COVID-19 vaccines are available. Therefore, every effort should be made to vaccinate with the second dose according to the recommended schedule.
In general, regardless of the time between doses, interruption of a vaccine series does not require restarting the series as delays between doses do not result in a reduction in final antibody concentrations for most multi-dose products. However, the follow-up time in COVID-19 vaccine clinical trials is short and maximum protection may not be attained until the complete vaccine series has been administered.