I Am 37 With No Children. I Have Donated 29

I am 37 with no children. I have donated 29 eggs to a fertility clinic. No neurological family history. No early menopause family history. I do not smoke. I quit drinking last year but was never heavy before. I am a healthy weight. Since 2014 I have developed an irregular menstrual cycle. Other symptoms started to occur. Since September 2016 I have quickly developed further symptoms and am struggling with so many problems all at once.

Significant hair thinning
Occasional night sweats
Headaches
Dry skin condition
Painful menstruation
Irregular menstrual cycle
Low blood pressure
Anxiety
Panic attacks
Mood swings
Tinnitus
Fasciculations
Sore breasts before menstruating
Dizziness
IBS
Frequent urination
Infrequent patches of goosebumps without being cold
Aching muscles/joints

Can you suggest what could be causing these symptoms?

Thank you.