Where my thyroid people at?

Context: I have very closely monitored hypothyroidism since I had a total thyroidectomy years ago. One successful pregnancy despite this.

Since then I've had 5 early losses at different durations. Full RPL panel, hysteroscopy, etc. Progesterone supplementation. Everything from then has either been fixed or is normal. Still had a 5th loss.

My FT4 is .74 on a .65-1.85 range. Neither my endo or RE is flagging this as an issue, especially compared to my first three losses when it was in the .4 range and my TSH was over 5. But other thyroid sites have people telling me they think my losses are still from that lower FT4. I'm on 120mg of Armour right now.

For those with a thyroid problem -- what was your FT4 if it was checked during/after a loss? What was it if you had a success?

**Update:** Endo *does* think my FT4 could still be an issue and we're now moving me off NDT to Levoxyl.