BD = Baby dance (what you do to make a baby

)
4DPO is 4 days post ovulation, it's best to wait until about 12DPO to test as the pregnancy hormone that the test picks up is very low for the first 2 weeks.
So wait until your period is due or late (if you can contain yourself) before testing with your first morning urine (FMU).
Welcome to the 2WW