It sounds like you didn't get your TSH measured. I'm so sorry you were treated that way. One quick way to see if your thyroid is up to snuff is to take your temperature mid-to-late afternoon for several days. Figure out your pattern. Should be 98.6 F or 37 C. Another method is to take your temp first thing in the morning, but I've had better luck knowing my temp when I'm up and moving about. If you're running cool, then you'll have a target to look at. Could involve both your thyroid and adrenals, since you've struggled after delivering your baby. If you want to go further, I believe ZRT Labs offers their blood spot tests to Canadians, but you'll have to pay out-of-pocket. Check in at Stop the Thyroid Madness if you're curious whether your symptoms match others with low thyroid function. A combo temperature test for both thyroid and adrenal function is under "Discovery Step 2, Test 4." Best wishes!
My preference is, pretty darned close. When you get there, you'll feel why. I checked the converter, 36.74 C is 98.1 F. I will tell you that even when my temp is no lower than 98.4 F (36.89 C), I still feel like I'm moving through water all day. Plus, my muscles ache. Now that my temps have increased, I really enjoy 98.6 F (37 C) or even 98.7 F (37.06 C). When I get there each morning, my brain turns on just like a light bulb, and, I get creative. I love it. And I wish it for everybody.
I definitely use iodine, selenium, salt, vitamin C, and B complex, plus pantothenic acid for weak adrenals. I took iron till my ferritin got to 110, raised my levels of vitamin D, and use progesterone cream (I'm post-menopausal). Still, the temps wouldn't budge from a high of 97.8 F (36.56 C) in the afternoon. I was dragging. First I tried the thyroid glandular Nutri-Meds, but when I needed too many of those, I eventually switched to generic Armour. I'm happy to report, though, that after a high of 360 mg (6 grains), my needs appear to be drifting downwards. I'm not expecting a full recovery, but would enjoy it nonetheless, and I'd be thrilled simply to need less Armour.
I do take magnesium, 500 mg. I didn't think to list it because I have trouble remembering that it's associated with thyroid health. I've taken it for so long, I think of it as a support for general good health. Thanks for posting that reminder.