If you're sure your home is infested with bed bugs, but you aren't showing signs of bed bug bites, it is highly likely that you're still being bitten. You're just not allergic.
That's actually a really good question and we do get this question quite often. If you know that there are bed bugs in your home, let's say there are bed bugs in the bed and your spouse is showing signs of the bed bugs, but you're not, you are actually being bitten by the bed bugs. You're just not allergic to them. Therefore, you don't have any bites to show.