Cant sleep ?

Lately me & my relationship has not been going so good, but things like a boy does not ever affect my sleeping at night.. I will go to sleep fast but then wake up 30-1hour later all sweaty & hot. I have gotten 2-3 hours of sleep the night before last night & last night instead of waking up it was weird it was like I was awake but again I wasn't , I was in deep thought & laying there.. Then woke up around 4 in the morning after going to sleep around 2 , what could this possibly mean?