I, too, think that if I were going to be bitten by a black widow, it would have happened by now.
They seem to be peace-loving creatures.
However, last winter I saw one crawling up an interior brick wall, behind a propane stove in my sunroom. It must have come in with one of my plants in the fall.
I relased it outdoors. Could there be others in the house? If so, what do I do about it?
You could have more inside. The best way to go about it is to search for webs. "Silk" does not describe their threads. Their webs are very tough, usually wth debris caught in them. It could just be one single thread you find, leading to a hiding place. If you think you may have one, but don't see the spider, come back at night with a flashlight. They are usually in a "forward" hunting position at night.
I remove them from areas where someone could encounter them, such as under the hood of a vehicle. Otherwise I live and let live.