Bed bugs have quite a long life cycle and lifespan in comparison to similar blood-sucking parasites. This prolonged life makes them especially difficult to eradicate completely. It takes a bed bug around five weeks to go through each of its baby to adolescent nymph stages and reach sexual maturity.
There are three distinct stages of the bed bug life cycle. After bed bug eggs hatch, they progress through a five-step nymph stage before reaching the adult state. Bed bug eggs hatch in 12-14 days. Immediately after hatching, and in between each nymphal stage, they need a blood meal.
A bed bug life cycle includes multiple stages. A female bed bug lays eggs in groups of one to 50 and they take anywhere from six to 17 days to hatch, according to bedbugs.org. By the time she dies, a female will have laid hundreds of eggs. The eggs are small, about 1 millimeter in size,
Bed bug eggs hatch in 6-10 days and the nymph bed bug will go out to find its first blood meal in order to molt to the next stage. Each nymph stage usually lasts about a week (longer if a bed bug can't find a live host to feed on). The adult bed bug life span usually last 6-12 months. How to Check for Bed Bugs
The life cycle of a bed bug is shown in the photograph below. During its lifetime, a bed bug will go through the following stages (Starting from the top left, moving counterclockwise): Eggs (1mm). 1st stage nymph (1.5 mm). 2nd stage nymph (2 mm). 3rd stage nymph (2.5 mm). 4th stage nymph (3 mm). 5th stage nymph (4.5 mm).
The bed bug life cycle starts with an egg. It is milky white in color, and about a millimeter long, resembling a grain of rice. Pregnant females lay three or four eggs per day (though sometimes as much as five), and up to 500 eggs can be laid in her lifetime.