Feeling that someone unseen is in the room is a common sensation near sleep. Tradition reads it as a part of yourself, or a memory, asking for attention.
Where in your waking life have you met something like this lately?
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.