Had baby internal pipped before ypu made safety hole?
If so how long before you made the safety hole
If you made a safety hole it should have been tiny like a pin hole and you wouldn’t be able to see any membrane
How big of a hole did you make ?
With veins the baby isn’t ready so I would leave it be for awhile
Day 28 is just a approximate time
Some hatch before and some after
I go by what the duckling is doing and not the actual date
Use Vaseline to keep the membrane moist as it last way longer
But the coconut oil is better to see veins
I would check every 3 hours and see how it looks and coat the membrane again
It can take 24-48 hours for baby to hatch after an external pip