Hi I also had thyroiodoctomy and had ED after surgery. I will write what have you check, it exist big chance that you will recognize the reason of your problem, in my situation it is primary emty sella syndrome.
1.Take one dose of you levothyroxine for two weeks (175 or 137, or any other), do them 6 weeks after last clomid pill
2. Check one day at once: TSH,FT3,FT$,rT3 (if available)- don't take levothyroxinein morning before bloodtest-write them on this forum
3. Do you at once with parameters which i mention above or one or two days later.
LH,FSH,Testoterone, Estradiol, ACTH,Cortisol,Dhea-SO4,Prolactin
This may be pricey but with this labs you check all factors, every internal organ which is connected with hormones - you also save money, beacuse instead of doing one bloodtest without context, you will do all them at once and have whole story of your body. Learn my faults. If I could, I would start do this labs at once as soon as I recognize first symptoms. And If doc will try to persuade you to not make them, he's wrong beacuse they learn them to not think. They just do protocols and not think about reason of problem.-write this on this forum
4-. Please do if you can after all this labs. THEN you do MRI of pituitary gland, not head, just pituitary gland (without this I wouldn't recognize I have partaily emty sella). Note on your MRI description the pituitary size. If everything with pituitary will be perfect than you will have to check your adrenals.
-5. Take clomid 25 mg or 50mg for month (depends on your doctor), day after last pill repeat all labs I mention before.
6 .First test to check adrenals is dexamtaosone test. You can do also MRI of adrenals. Also synthACTH test.
do those steps in the way as I wrote, it is designed on my experience, and is as cheap and efective s it can be.
Three first steps are the mos important now.
Update your status and we will try to help you.