Odd pain in central upper abdomen - please diagnose it! (linked to fasting?)

[Flossyfloof]

I have been doing the 5:2 diet for a while but not really properly - no doubt overeating on fast days and on non-fast days.
I was fasting on Tuesday and did brilliantly - homemade carrot soup for lunch. I know I tend not to drink enough.
During the evening my tummy felt really uncomfortable. I had a couple of pieces of toast and it felt a bit better. When I went to bed though, it was dreadful, stopped me sleeping. I eventually took a couple of Paracetamol and felt a bit better.
It still hasn't quite gone, though. It isn't really bad, probably only a 2, but it is there. I have swigged a bit of Gaviscon, going to have a couple more Paras in a minute as I feel a bit rubbish (possibly linked to lack of sleep from Tuesday).
Of course, I have looked on the internet and can't find anything at all it might be.
So - any guesses?

Watching this thread as I find the same on the 5:2. Have just failed my fast day today in fact and it's not even noon.

Google acid reflux, or hiatus hernia.

I have one and have pain in my upper middle abdomen where you describe.

Could be linked to fasting as your stomach tends to produce more acid if stomach empty iirc.

Hunger..?

please cease disordered eating and see if that works - eating proper food in reasonable portions will control your weight.

if the pain continues please see a doctor.

SpecialSubject, maybe you should read up on 5:2 instead of ordering OP around? 5:2 is being recommended by more and more doctors as it appears to resolve a wide range of health problems.

at "disordered". It's disordered to stuff our faces with cakes and biscuits 24/7 but that's still viewed as mainstream.

Thanks everyone. I definitely feel a bit better but still not right at all. Am feeling very tired - Tuesday night really was bad - and I managed to have a bit of a doze until cat came in demanding attention. I am going out in an hour or so for a leaving do, what a shame I don't feel like it but I will go.
I don't think it is hunger pangs although admittedly I would struggle to recognise them! Last time I had a really bad hangover I think I felt like this - really fancy carbs, pie and chips or something. I will see how it goes, won't be going out for long.

I assume I would be able to sense acid reflux in my throat or something? I can't...
I am not sure about a hiatus hernia. Have lost a fair bit of weight, still could lose a bit more, don't smoke and rarely drink.

i have a hiatus hernia-it's worse when i am hungry and when i eat too much fat.
you need to eat some food.
the pain is right in the middle below ribs

not always anything to do with acid reflux

Reading with interest as I get this when I cut too far back on food. I had quite a severe bout lasting a few weeks maybe 3 years ago. Possibly linked to not drinking enough in my case too. An ache, sometimes intermittent, just under my ribcage on the right hand side where I imagine my liver is! (Probably isn't there at all!) I was terrified when I had to have a liver scan during pregnancy as I was convinced it would be enlarged or something but there was nothing to see.

Would love to discover the cause!