Thank you for your helpfull replies!

entheogenic-gnosi,  For all my previous 3 trips I  used powdered form. Both the mhrb and rue separetely were simmered three times, each time I would let it simmer  for around 3hrs, filter throuh a  tshirt and put it in the fridge.   I guess  the brew is potent since  my 2nd  trip which was my first brew trip ever gave me CEV and ocasional slight OEVs at 4.7g mhrb, 3g rue w/o drinking the sediment. I also drank the brew  without any  diffeculty at all in  that same 2nd trip.  It is the 3rd  trip that completely failed for a yet unknown reason.   I mean both  trips used brews from the exact same original brew.

Jees, really highly interesting, Lets see if I got this right from you, so you mean that the possible reason I didnt  experience anything is because  I didnt  let the nausea  continue and thus the  stomach didnt let most of the  content into the bloodstream. Thus only very small portion hit the blood stream. Good, now I think I understand  the  cause behind the very slow onset and why I got no experience. Sounds very logical. I probably held the naucea for like 5-10 min. I should have let the  naucea  continue as to let the stomach open to my system.  This is roughly what you mean, right?

Now here is still the other detail I am suprised at. My  3rd failed trip; as I said earier I felt  such a huge  urge to vomit just at the  lips/mouth  touching the brew. I remmeber  how I had to gather all my strength and close my eyes and struggle  to the limit and beyond just to  let the brews down my throat..   I really didnt even feel a thing when I  consumed from the exact same original brew  in the earlier 2nd trip. 

Is it psychological  really? This strong? what triggered this?

Thanks