Dreaming before completely asleep?

In the past year or so my sleep habits have changed quite a bit and not necessarily by choice. I haven't slept through the night in 6 months, I am constantly tired, I dream quite often when I nap (which I don't recall doing before) and now I've had 3 different times where I start dreaming and I don't think I am completely asleep because I am still very aware of what's going on on the tv or my husbands movements things like that. It never lasts long but it is very strange. I'm wondering if it's some sort of sleep apnea or just a phase.