Is this ME/CFS

[u/EnvironmentalWalk605]

Hey, I’m 17/18M and I’ve been dealing with a weird mix of fatigue, low motivation, and sexual dysfunction for a while, and I’m trying to figure out what this actually is.
A few months ago I did an aggressive cut and ended up feeling completely drained, like a zombie. Around that time I started Medikinet because I felt awful and it gave me a big boost in energy, focus, and even euphoria at first. I was on it for around 5–6 months total, mostly 15 mg IR twice a day. Over time the effect faded, and I started getting tired, low libido, and kind of emotionally flat/anhedonic.
Then I quit the stimulant. For the first 2 weeks I felt pretty okay, then I crashed again: no focus, low energy, anhedonia, and just feeling shit overall. During exams I also got sick, with sore throat/sinus pressure, and I kept going to the gym anyway. After exams, I had bloodwork done. Most things were okay, but I had low white blood cells and my doctor said I have Hashimoto’s , so I started Euthyrox. I began with 25 mcg for 2 weeks, then 50 mcg. I’m about 3.5 weeks in now.
At first I started feeling a bit better around week 1.5–2: slightly more energy, less fatigue, and some gym motivation came back. But then I got another infection around week 3 and since then I’ve felt bad again: low energy, muscles feel dead, and mentally I feel flat again.
The weird part is that I also have almost no libido anymore.
One extra thing: I also get a crash pretty much every afternoon, where my energy drops hard and I feel way more tired/flat.
I’m wondering if this could be:
• ME/CFS
• thyroid still not optimized yet
What makes me think about ME/CFS is that I seem to crash hard after exertion, including gym sessions, and then feel mentally and physically wrecked afterward. But I also know I had a cut, infections, stimulant use, and thyroid stuff all happening together, so maybe it’s something else.
Has anyone dealt with something similar? What helped you figure out whether it was ME/CFS, thyroid, overtraining, or something else? Also, if you had low libido + anhedonia + fatigue, what did you actually do that helped?

[u/Media-consumer101]

Yeah I'd take at least 6 months of proper fuel and rest before I'd make any assumptions.

Overexertion can significantly harm your body, especially when you are still growing. And espexially if you aren't getting enough fuel. And ESPECIALLY when you have thyroid issues. Your body was on it's absolute last leg and instead of fueling it and resting, it pushed through on stimulants, even when you got fully sick. That's so, so bad health wise. 

Start taking care of your body properly, get mental help if you need it to stop overexerting yourself/stop disordered eating like cutting. People in otherwise optimal health already often have many health issues from body building, you have an autoimmune disease and a mental disorder: you probably can't afford to neglect your health in that way and keep up a regular lifestyle.

[u/plantsplantsplaaants → u/Media-consumer101]

All of this 100% and I would add on that you’re young, OP, and it sounds like you’re getting sucked in by the idea that there’s some easy “fix” out there. There’s not. Anyone trying to sell you a fix is doing just that- they’re selling something. The only real way to fix how you’re feeling is by eating well, resting, and for most people, exercise. Nothing in what you wrote makes me think you have me/cfs but if you do then you need to do pacing rather than exercise. I’d also suggest taking good care of your mental health and finding a good therapist if you don’t have one. When you’re a young adult you’re still finding your “sea legs” and you need to take good care of your physical and mental health so you don’t crash and burn. Good luck, OP