George Stamp in the foreground holding the coffin, represents George Grenville. Lord Grenville is shown carrying his favourite Childs Coffin, Miss Americ Stamp, who was born in 1763 and died hard in 1766.
The average menstrual cycle is 28 days long. However, a normal cycle can be shorter or longer than this. It may be anywhere from 21 to 35 days long. Most periods last 3 to 5 days, but anywhere from 2 to 7 days is normal.
The length of a normal menstrual cycle is 28 days, plus/minus 7 days. That is, a period may occur 7 days before the expected date of the period or may be normally delayed for 7 days beyond the expected date. But, if the delay is more than 35 (28+7) days, then the cause of the delay needs to be investigated. Periods can be delayed for a single cycle or it can be delayed in every cycle.