I didn't feel anything...

Hello all, first I will give some background on my experience with psychedelics: I had tripped 5 times before this experience, all on atlantis truffles. The first time I did it was when I was 21 and I consider it one of the best things I've ever done. Then the following 4 times where still very intense experiences but each one a little bit less than the previous ones. In September I had an experience where I felt like I've had enough.

Now it's August and I did it another time, I took 15 grams of utopia this time but here is the problem:

I didn't feel anything. NOTHING

They came through the mail, I kept them a week in the fridge before doing them.

Does anyone who understands this explain this to me please? Thanks