I find when i sleep alone, i am easily woken by any noise whereas when im with someone when im asleep, a bomb could go off and i wouldnt notice!!

I dont usually remember my dreams but i had a bad nights sleep last night, and when i finally did get to sleep, i dreamt that someone broke into my house while i was asleep with a knife and i went downstairs to see and was stabbed in my arm...i woke up suddenly and i was clutching my arm tightly..i took me a second to realise it wasnt real.
It freaked me out a little bit, even though i know nobody would break into my house, with my dogs they would have a death wish