Ongoing and worsening symptoms. Hashis)

I am 23, active (walk a few miles daily and do crossfit 3X a week), eat healthy. I have hashimotos for about 5 years and it is well controlled. Some about October I've started having some symptoms that are worrying me. The biggest one is fatigue, I'm so tired all the time I want to sleep and sleep and I rarely feel awake, I also have frequent headaches (it's becoming almost daily), I have had a slight appetite decrease recently (which is fine because I want to lose some weight--for cosmetic reasons). I currently have a swollen lymph node in my neck but it's only been there about 2 days. I am achey often not due to my working out. I am anemic and I take iron daily and it doesn't help much with my ferritin levels). I can provide lab results. I just have that gut feeling that something is wrong. not sure what category to put it in so I put it in cancer because I'm worried that's what it is (I'm not a hypochondriac, but I had the same feeling before being diagnosed with hashis)