Hi sunriser and welcome to the forum,you can pop anything into the browser and you'll find an answer to pretty much anything,between us all,we've suffered most things
All your symptoms sound pretty normal,make sure you take a good vitamin supplement
IBS covers a huge range of symptoms,I was diagnosed with it over 25 years ago but just lately found out I've food intolerances,which can also start as we hit meno,so maybe keep a food diary for a couple of weeks and see if there's a pattern to your stomach issues x