Dearest Pompadour, if I answer with what I know which may be limited, then it could open up a whole can of worms!
First of all, and please get other s to verify this:
Im not sure 50mcg is enough to shut down the thyroid from producing hormones but I get the idea of it. That makes sense.
I can see why the doctor said your thyroid levels are okay but in my world they are not. An upper limit of 2.5 on the TSH is what I personally work to (lower is better)
Free T3 I use the range 4.5-6.5 pg/ml and so yours is low at 3.38 (or the range 6.9-10 pmol/L and yours if 5.2 is low)
FreeT4 I use the range 18.7-32 pmol/L and yours is 9.99 so that is low too.
Im not a docto and I am fairly fresh to this site, so please just take this as information to be considered,
it was my impression that nodules, plus raised TSH, plus low ft4 and ft3 were indicative of Hashis or other thyroid disease.
Your doctor has not responded to these ranges as you have a conventional doctor and not an integrative one who would be more concerned with QoL.
However, you say you have no symptoms. it is very possible to have no symptoms with low free thyroid hormones and high TSH, and nodules. My levels were similar to yours but fully symptomatic and everyone is different (i have my ultrasound this week).
Many people will tell you that you have to have raised antibodies to have an autoimmune disease such as hashimotos. I do not believe this to be the case. I have heard too much talk of anywhere from 10-20% of hashis patients testing negative for antibodies, but positive from ultrasound or biopsy that looks for damage from an autoimmune disease.
Im afraid I cannot take you much further than that, can only say what I know already.
If you dont have symptoms then personally I would be as inclined as you are to monitor the nodules without meds. If you dont like taking pharmaceuticals but someday need thyroid support then there are things called NDT (and that is another bridge to cross!).
I think your doctor needs to be very clear with you what they think would happen if you didnt have meds and the nodules grow? What is the doctor trying to prevent?
And you could test the doctors knowledge: As the Levo is a synthetic form of T4 hormone, why not ask the doc how much T4 a heakthy thyroid produces in a day? You want them to know the answer, If they dont then how do they know that 50mcg will replace it?
I would be asking more questions. Follow your intuition on this. Plus get informed of repercussions either way.
Youre right about side effects if Levo. It works for heaps of people but for some gives them ore symptoms!!!
Sorry about the can of worms, hope that helps a bit