I don't know if my experience will be of any use to you ....
Three years ago, I started to have some pelvic pain on my left side. I was worried so I went to my GP, obviously in my head, it was ovarian cancer. Whilst waiting to have a scan, I got very anxious and started having all sorts of twinges, weird, odd little symptoms - I lost my appetite, muscle twitching, itching, lots of odd little symptoms. I googled it and came up with various diagnosis, all of which would be fatal! I eventually had the scan and it was clear. So I went back to my GP who referred me for physio. It didn't help. So she referred me to someone else. It ended up in MRI scans all which revealed nothing (I had private health insurance) any way ended up seeing a gyneacologist. Had a operation where my Fallopian tube was removed as it was full of cysts. Nothing else was found. But I was still in pain.
It took some time, and a great deal of distress on my part to realise that, in actual fact, the Drs were right - there was nothing physically wrong with me, it was actually depression. It was very hard to admit that, actually, I was on a different page to everyone else. This brief tale actual went on for six months and also coincideded with the seven year anniversary of the death of my mother, from cancer. I had absolutely no idea I had depression. In my case it was severe and I had days where I felt suicidal. My dcs kept me going. I started to take antidepressants and within a few weeks I was back to normal. I had no idea that depression could cause physical symptoms. My GP said it was a 'breakdown' and I just couldn't cope anymore.
Sine then I've not looked back. I've been off the antidepressants for about six months but I looking out for that 'feeling' just in case.
I don't know if this rings any bells for you? Perhaps your symptoms have a physical cause but please also bear in mind takes such as mine. Anxiety and depression are awful, I wouldn't wish them on anyone. It was only after taking medication that I reaslied I'd actually had it for some years, before it finally all came to ahead. Be kind to yourself and step away from google, there aren't any answers on there 