A few days ago I watched an episode of Death in Paradise with close to this kind of setup. The guy in question assumed he’s the murderer because he held the weapon in his hand once he woke up with a concussion. Though he had absolutely no reason to kill the victim, but because of how he woke up he simply assumed he did. He turned himself in.
As for me in your scenario, I think I’d try to figure out first who the victim was. Shouldn’t be too difficult if the phone and laptop are unlocked and there’s unlimited internet access. Fleeing is probably kind of hard because my DNA might be all over the place. I mean, I already don’t know how I got there, so who knows what’s happened while I was teleported-sleeping? Where the fuck would I be and flee to anyway? Might as well investigate as much as possible and hope this victim has no nosy neighbours. Contacting my close friends via internet and try to make it clear to them (with pictures!) what’s going on.
This all probably after having screamed my lungs out first.
A couple of them are extremely trustworthy enough to join in the investigation with me. I’m not going to contact every damn friend I have, that’d be silly!