Lyme & Hormones: hypothalamic ammenorrhea - related?

Soooo…

It's been 5 months since my last period, so my gynecologist tested my hormones and they came back very low and she diagnosed me with hypothalamic ammenorrhea. For those who don't know, this condition usually is in line with someone who has an eating disorder, is underweight, or who over-exercises. I have always been in the normal-low BMI range (106 pounds, 5'3"), but last summer before lyme disease I was overexercising (for my body, anyway). This summer I was still getting a period every few months. While I was concerned, my doctor told me it was fine so I didn't worry about it. But since lyme diagnosis, my periods have stopped altogether. I am wondering - can lyme cause hormonal imbalance?

I would have understood the Hypothalamic ammenorrhea this summer when I really was exercising, but for the past 8 months I've been eating healthy organic food, lots of good fats and carbs, and I hardly exercise, yet it seems as though my hormones are getting worse.

My primary symptom right now is brain fog (which has been 24/7 since the first day of my full-blown lyme back in August). Could this be caused by hormonal imbalances and HA, or is it more likely that the lyme toxins in my hypothalamus are causing hormonal imbalances and hypothalamic ammenorrhea?

It's like the chicken and egg - which came first? What is causing what?

I have big problems with being constantly cold, my feet and back are ice cold. I think that Lyme attacked centre in brain which should regulate hormones that adapt to certain weather condition. I hope it resolve once Bb is killed.

I am definitely overly sensitive to cold, but don't do well in either extreme. I am 26 years old, so I should not be menopausal. My doctors that are not LLMDs seem to think that it's because I am so small and that I should gain weight…so I will try to do that and see what happens, I guess…Like I said, I already eat three full meals a day plus multiple snacks.

I am so scared that I won't be able to have a baby in the future. Can lyme permanently mess this up? Should treatment help?

I am also pretty sure that once Lyme is solved, hormones will be normal again.
What is your BMI?