Noises in my mattress and pillows?

I hear noises in my pillow lately. I alway tought it was just the pillow as it slowly crashes under the weight of my head, but last night I listeded closly long after I lay my head and I could still hear the noise. Then I checked my mattress. Same thing. I even held my breth and could still hear even more sounds than in my pillow. Do I have bedbugs? There are no other signs that would indicate that.. Or am I just loosing it?