I can relate to some extent. My previously good health went South around that age. I had a strangely long list of mild to moderate health problems. My doctors had little success with them. I turned out to have a heavy metal problem but of course most people don't have that.
You might try methylation support, especially B12. It might help somewhat with libido.
You could look into mitochondria support including CoQ10.
Of course heavy metals are known to affect all of the above.
A long shot regarding the lower abdominal discomfort is cadmium toxicity. Cd was a tint in old lead paint. I got poisoned from it and lead due to growing up in a family with a renovation construction business.
Cd is also in tobacco products especially pot--a health food--right!
You might check the pH--acidity--of your urine especially the first one in the morning. If it is usually rather low 6.0 and lower, it might be causing you to retain Cd in your kidneys. A. Cutler mentions that in his book on heavy metal detox.
I had lower abdominal discomfort in the early months of detox--before I paid attention to the urine pH. It mostly went away after I was more careful about the pH.
I really doubt all of those symptoms are due to AI/AF.
If heavy metals are involved, I'd also expect changes in mood and mental performance. Sometimes that is anxiety but sometimes it is an intense, "difficult" mood, especially in times of stress. Some Depression is also common. Additional brain fog, worsening memory, food sensitivities , gut problems and low thyorid are quite commonly reported in detox groups. At your age they might just be subtle. Check out the symptoms under the 1000+ tests here. http://livingnetwork.co.za/chelationnetwork/hairtest/hairtest3/