How do I end health anxiety once and for all?

I have been having something wrong all the time, I'm managing to deal with most of my mystery symptoms,less doctor visits, less hassling them but some symptoms persist.

No matter how hard I try to ignore it, I keep myself distracted a part of my mind searches for something.

2 of them are this pressure inside my nose and ears above palet, that's mild, and comes in waves. Crackling and itchy ears and like someone's putting their finger in my ears. The more I ignore it the more deeper it gets.

I even have a new symptom. I find it hard to think sometimes.

Had nasal sprays twice for sinus inflamation and realease fluid from my ears. Nothing work

Second problem I still have soreness in my lower left side, gets better when I poo. Sore during morning and nights.

Had blood tests, urine test all normal.

I have this obsession of looking at my stools, I poop in an old news paper and look for signs of worms or blood. Most of it is just some mucus, dry stools.

Today I notice some red mucus in my stool. Only one.

I tried to ignore it, but no matter what I do, like something in my mind wants to focus on my lower left side pain.

There probably wont be nothing there tomorrow.

Everything is all mild. But I am always having constant waves of fatigued tiredness nasea followed by waves of anxiety and depression.

I did have cbt for GAD and mild depression.

What can I do to stop obsessing with my annoying uncomfortable feelings?

I feel fed up of feeling like this, I feel fed up of life.