Thank you for the replies.
I didn't mean that some medication interfered, I'm not on any kind of medication, neither to sleep nor for anxiety. I tend to develop psoriasis as result of stress and fever (e.g. I graduated with fever and I get high fever when I'm really angry or distressed which goes away as soon as I get better emotionally).
I had a very difficult session and the day afer I got cough, fever, stomach ache etc. I had never been so sick though, so I was wondering if it might be again the case but 10 times worse. Because if it is I need to fix this, can't get so sick just because of emotions. I went to the doctor anyway so at least I'm keeping fever low. And am eating well.. so I'll just wait I guess!