How long do most people stay ill for before they start worrying it’s cancer?

The only time I genuinely thought I might have a tumour was when doctors brought it up because of dodgy blood tests, and only because I have a family history of tumours that could cause that, some abnormal tests I'd had in the past and because I'd had some vague symptoms for a couple of years that made me wonder if there might be something going on (but that wasn't why I had said blood tests and not something I even mentioned to the doctor).
Other than that, I frequently have random symptoms that probably could be due to cancer but I just ignore them. When I had a cough and couldn't breathe properly after having covid, I waited 4 months before seeing anyone. When I wondered about having an ovarian cyst, I waited for about a year. I don't particularly like seeing doctors and most things turn out to be nothing, so...

I have multiple panic attacks per day about it until the symptoms stop though or cancer is officially ruled out though lol

I have multiple panic attacks per day about it until the symptoms stop though or cancer is officially ruled out though lol

I have multiple panic attacks per day about it until the symptoms stop though or cancer is officially ruled out though lol

This is not to say you should rule out all symptoms as anxiety. The key is to be in tune with your body. Don't dismiss sensations you feel, but also don't spiral over them. You won't always know what's causing a sensation, and that's ok! Just tell yourself it's just a sensation and that it is likely nothing. But, if it continues for a very long time and your concerned, get it checked for your peace of mind. It is most likely nothing, but don't stress about the possibility that it is something serious until you get to that point, its a waste of energy!