Hi, welcome to HCM. Thanks for asking your query at this forum.
We understand your concern. I have read your question carefully and understood it. I will try my best to answer it.
As you told there is family history of
bipolar disorder,
epilepsy,
narcolepsy and
aneurysm and recently you had a strange perceptual experience of hearing unusual sounds of friends, seeing traces of people moving out and having a belief that a girl was there with you at your house.
Since these symptoms occurred suddenly, it points towards
acute confusional state either may be due to intoxication with some substance like marijuana or due to effect of epilepsy. Since you became alright soon and could get your dog out for a walk it goes more towards an epileptic fit. After recovery from an epileptic fit a person remains confused for some time, unable to move
limbs initially for few minutes, can hear unusual voices or can see unusual things. This is a temporary condition and it goes of gradually over a period of next 20-30 minutes. Apparently it has happened with you. A negative blood and urine report further rules out possibility of drugging.
You may clarify further from your friends who might have witnessed the possible epileptic fit. If you had noticed tongue bite/involuntary micturation/defecation etc then it further goes towards epileptic fit.
It is better to get evaluated further and get assessed personally by a
neurologist who may advise you for EEG and MRI brain.
I hope it answers your query. I wish you all the best.