Am I in a flatline?

Hey guys! I've been on my nofap journey for several months now. I haven't been able to make it past 25 days. Most of the time, I'd last a few days or a week before relapsing. Anyway, this Monday I started feeling different. I never felt like this before. I thought it was just a bad day for me/hormones so I decided to rest and sleep it out but the next morning I still felt the same way.

My head was foggy, congested..I don't know how to describe it..It's like there's a weight on my head or there's pressure..usually at the back (of my head). This fogginess goes up and down throughout the day in terms of intensity..sometimes my head's pretty foggy other times not so much..but you can still feel it.

My energy levels also dropped off. I feel low..not happy or sad but just low. I don't have problems going to school or studying but I don't feel like doing anything. The idea of just relaxing feels great. Every time I try to be cheerful I feel like I have to put some effort into it. Being happy or energetic takes an effort and I'd rather keep a straight and chill face.

As for my libido, it's gone done as well like my energy levels. Occasionally, there is some slight action down there but they and few and far in between.

The past day or two I've also felt a bit flu-like but no symptoms (no fever, mucus or anything..just feel weaker, like I my immune system is low and I can get sick..also when I worked out earlier, I had cold sweats).

I talked with my psychologist yesterday (who recommended me to abstain from PMO for 90 days tho he doesn't know about the NoFap), and he thinks that I'm going through withdrawal symptoms and personally, I've heard about the flatline as well..so I looked up on it but I found out that the flatline experiences of other people are a lot worse...depression, increased anxiety, insomnia, no libido at all, etc which makes me wonder, am I going through a flatline..has anyone had a similar flat-line experience to mine? I PMO'd hard for the last 5 years (daily..sometimes twice or thrice in a day), if my brain has to recover from that, I'm expecting a lot more than what I'm experiencing now but if this is it...I am seriously grateful. This is the fifth day I've felt like this...can anyone confirm if what I'm going through is a flat line? Thanks!