CANT SLEEP

OK this is happening way too often. I go to bed and before I know it, something wakes me up and I am looking at the clock and listening to the heavy breathing of my husband. It is sometimes 1:30 sometimes 3 o'clock, when it is 4:30, I am ok, because morning is near. But this morning it is 1:30 and I am getting so tired of this. I pray, I think, I turn and toss and usually there is a cat on or near me. I am just not sure what the problem is. If I start vacuuming I think Tom and Emily might be upset. What do you think?