The bug you saw could be a carpet beetle. They are round in shape and have different colors. Most of the colors on beetles’ spots are black, white, yellow or beige. They resemble ladybirds in so many ways. They are usually very small but they can grow up to 4inches long.
Carpet beetles are destructive and feed on pollen. They also attack fur, furniture, carpets and clothing. There are many species of the carpet beetle can take up to three years to grow from an egg to adult yet they only live for less than fifty days.
Carpet beetles are scientifically classified as:
Since these beetles start causing damages during the larvae stage, you might need to find a way of doing away with them beetles and any of their laid eggs. The outer covering of an already grown beetle is large and looks like they contain the larvae even after metamorphosis to the next stage of growth.
There are over three hundred species of bettles. Some of these beetles look like bug species like the maculated scarab, Mexican bean beetle, Argus tortoise beetle and the crawling water beetle. These species can adapt to any kind of environment they live in.
The bug you saw could be a species of carpet beetles or any other bug that has similar characteristics. You can look at pictures of bugs and carpet beetles on www.pestworldforkids.org/beetles.htmlor on buguide.net. These sites have images of all creatures and a brief description of the same. You can try matching the images you saw with these images to ascertain what you saw in your bed.