Hugely late to this thread; I didn't see it earlier.
Echoing the sentiments of others, only you can decide when to quit.
HOWEVER -- I think you made a big mistake ignoring the "Bad omens" and your gut and going on the trip anyway. It's a FACT that this kind of stuff lowers your confidence -- and decreased confidence is what makes you crash, not the "Bad juju."
IE -- listen to your gut -- if something feels off, DON'T RIDE.
You couldn't hear a dump truck driving through a nitro glycerin plant!
Badasses might screw with another badass. Nobody screws with a nut job.