Will I ever sleep well again??!!!

[Empress]

My youngest is pre-school age, and sleeps very well, but every night (yes, every night!!) calls out for me at least once, usually a few times; he's usually still asleep but of course I wake up. I haven't had an unbroken nights sleep in years, now I'm wondering if I'll ever be able to again! Eeek utter panic at prospect of being tired for the rest of my life aaarrggghh!!

Is he having nightmares ? If he isn't awake, do you go and see him ? or do you stay in bed ?
I ask because if you "ignore" his calling because you know he isn't awake, you might learn not to really awaken from these "screams", like fathers do with newborn once they go back to work. That doesn't mean that you won't hear him or that you wouldn't wake if it was a serious call but that you would know how to distinguish it and not waken so much.
Does that make sense ?