It might be worth noting too that I went from a no sugar, no alcohol low calorie high exercise diet to........
no exercise, all burgers, lots of alcohol when I traveled to the stated before I arrived in the UK too. Which is why I gained all the weight I'd lost back.
my poor body probably doesn't know whats going on.
So - these tests were done by my friend where I am working. She is a doctor but we they were not processed the normal way due to me not being registered with the NHS yet.
however, I work within pathology so I was able to run them.
TSH 2.98 reference range 1.0-4.0 (normal)
FT4 reference range 11-22 my Valie 10.7
As you can see the FT4 is just out.
All of my other tests were normal and my hormones indicated that I was in the follicular stage of my cycle. My Estrogen was on the lower side of normal but still within it's reference range.
Kidney function, liver and electrolytes all normal.
I don't have any symptoms of low thyroid (I'm always achy because I'm always exercising).
I will go and properly get my blood taken this week and ask for a cortisol and FT3 level too.
What are your actual FT4 and TSH levels, with reference ranges?
Excess exercise, low thyroid hormones and stress can all cause absence of menstruation.