Who is about to diagnose it, your GP? Tell him/her everything you're feeling, write it down if necessary, there's always something you forget! Hopefully you should then be referred to a rheumatologist. It's a good idea to keep a diary of your symptoms while you wait for an appointment.
I, & several others on this site, have something called fibromyalgia, similar to ME & includes the symptoms you describe but the road to diagnosis for it can be a long one & may not be your problem at all.
Hope you get sorted & feel better soon.