The answer to 'how did bed bugs get in my house' is that bed bugs can be brought into a home in various ways, such as through used furniture, luggage, or even on clothing. Bed bugs are excellent hitchhikers and can easily latch onto items and be transported into a new environment.
Common signs of a bed bug infestation include small, itchy bites, the presence of bed bugs themselves, and finding small blood spots on your sheets. If you suspect a bed bug problem, it's important to act quickly to prevent the infestation from spreading.