Advice needed

I have had sleep problems for some time now. Either waking up in the middle of the night or not getting sleep at all. But lately, I am having a rather strange issue. I do feel drowsy and tend to sleep early, also have dreams but when I wake up (mostly after 4-5 hours) I feel as though I had never slept. My body does not feel tired but my eyes do. And sometimes I am still drowsy as in not as fresh as one must feel in the morning. But at the same time I am not sleepy at work.

It does not depend on how tired I am or if I am stressed or relaxed. I have never had this issue before and it’s making me anxious about my health. Any advice on what could be the problem and whether I should see a sleep specialist?