Insomnia Support Group
Insomnia is a symptom, rather than a disease, and is characterized by inadequate quantity or quality of sleep. People with insomnia complain of difficulty falling or staying asleep, which results in significant impairment of daytime functioning. Insomnia is categorized as transient (shorter than one week), short-term (one to three weeks) or chronic (longer than three...
This might be similar to what you are describing, but I'm wondering to what extent you may be experiencing sleep state misperception.
This is very common with insomniacs, who either are not aware or discount the value of any time spent asleep, because we are, well, asleep. And when asleep we are not really aware of time in the same way we are aware of time spent tossing and turning in frustration.
Have you ever tried keeping a sleep log where you document for instance, bed time, about how long it took to fall asleep, number of times awakened, duration of each awakening, and what time you awakened in the morning?