My periods waxed and waned for years B4 stopping.

during my menstruating years I would bleed heavily with excruciating pains, then stop for 2 days B4 dark brown staining. Normal for me. Probably due to not enough hormone to push out the final drops of 'waste'.
As oestrogen levels drop the body may become dry: inside and out; scalp, skin, vagina, between the toes, deep in the ears ..........

as well as muscles may become lax = aches and pains.
Join the Confused Club. Some find that keeping a mood/food/symptom diary of use so we become aware of what is normal.
When I get itchy nipples I apply 'vaseline' hand cream from the yellow bottle or nivea.
Years ago I began a thread 'oh errrr' because I could smell me although DH didn't notice any difference nor did people move away in shops

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Browse round. Make notes. Ask away.