Does Taking Lorazepam Cause Sleep Deprivation?

lorazepam
progesterone
BuSpar (buspirone)
Cymbalta (duloxetine)
Metoprolol Tartrate (metoprolol
I take all of these at night before bed. I have been doing this for over a year now. lateley when I wake up in the morning, i just want to keep sleeping, and i feel sleep deprived. I know that my blood preasure is probably being lowered with all of these, while sleeping. Can this cause oxygen deprivation while sleeping, makein me feel very tired when I wake up?