I slept on my side on the carpet for 20 minutes. will this make me sick from the germs/ bacteria on floor? carpet is in a home?

Not necessarily. Although the floor may have a higher collection of a variety of germs than bed linen, you are exposed to random germs on any surface. They don't jump up and invade your system directly. You do transfer germs from your fingers/hands to your face/mouth where they can invade the less resistant tissues of nose/mouth/eyes. Regular hand washing helps is either setting.

Hello, If you have allergies, the carpet often holds dust, dog/cat dander, irritants and possibly dust mites. The 20 minutes is a limited exposure time and your body's normal immune system should protect you from infection. Saline nasal irrigation after the exposures can help wash these exposures from your nose.