I'm so sorry you're going through that. I feel your pain. It's really not fun to have symptoms which mimic the cancer. It's so common for cancer survivors to experience dread in these moments.
I'm a survivor of stage 4 Hodgkin's lymphoma, and I've been in the place you're in many times. Early 2019 I started experiencing debilitating fatigue, weight loss because I wasn't eating, nausea and vomiting, dizziness, blurry vision and a flu-like feeling. I was absolutely convinced the cancer had returned, and my metal state plummeted, and my symptoms got worse and worse. It turns out I had developed vestibular migraines, and the symptoms were almost indistinguishable from the feeling of lymphoma.
There are so many things that could be contributing to how you're feeling. So, so many. It's really easy to mistake the plethora of symptoms: which are actually common to hundreds of conditions.
- Definitely get an appointment with a specialist if your concerns are growing, and you are not seeing any improvement in your condition. That is something within your control, and it is a sensible move.
One of the Stoics said "He who suffers before it is necessary suffers more than necessary". I try to follow that. Try to reserve panicking for when there is irrefutable evidence.
I'm here for you if need to talk about it more, and need someone to bounce ideas off.