Bedbugs disturb the place meant for rest, so they are read as irritations or anxieties that follow you into private time and make it hard to switch off.
When this appeared in your dream, what were you feeling?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.