Pregnant women are being urged to continue attending healthcare appointments following a Covid-19 infection.
It follows preliminary reports of four stillbirths that could be linked to the virus in Ireland.
Professor Keelin O'Donoghue, a consultant obstetrician at Cork University Maternity Hospital, said the cases appeared to be a "rare complication" of Covid-19, but she acknowledged that it was "pretty scary" for pregnant women hearing this information.
"We're still investigating," she told RTÉ Radio 1's Morning Ireland programme.
She said the advice for pregnant women "at a simple level" was to "try not to get Covid", and to get the coronavirus vaccination when it becomes available.
"For those who have Covid ... it's really important that their health care providers know, and that women attend their visits as normal," she said.
"We all have Covid pathways now in the hospitals.
"We should assess women who've had Covid, a minimum of 14 days after their infection, and undertake an ultrasound to check foetal wellbeing and women should certainly not ignore any signs of concerns that they might have and should be listened to when they presented to the maternity hospitals."
Deputy Chief Medical Officer Dr Ronan Glynn said on Thursday that public health officials had been made aware of four preliminary reports of stillbirths potentially associated with a condition called Covid placentitis.
At least two of the cases have been this year.
He said he had to wait for the full data to come through and is awaiting full details from coroners.
Dr Glynn warned the reports should be interpreted with "caution" as the coroners have not yet concluded their findings and that the HSE's National Women and Infants Programme is monitoring the situation.
Professor O'Donoghue said all four cases of stillbirth being investigated were from 24 weeks onwards and where women were symptomatic in three of the four cases, but not critically unwell.
"They had all had recent Covid within two to three weeks, and in some cases presented feeling a change in foetal movements," she said.
Professor O'Donoghue said last year there were 450 pregnancies reported to the Health Protection Surveillance Centre where there had been a positive Covid-19 test, and that in the majority of these women had a mild or moderate illness.
She said a small proportion (about 10%) had become critically unwell and that there had been no maternal deaths.
Professor O'Donoghue added that Ireland's outcomes were in line with other European countries.