You may also want to check to see if the generic T4 you're taking was made by a different manufacturer for your last refill. Different manufacturers use different fillers, dyes and buffers. These can have an effect on absorption.
Also if you are aware your calcium is low, Have you started taking calcium supplements? If so make sure that you separate your calcium supplements by about 4 hours away from your Thyroid meds. Calcium is known to inhibit and reduce the absorption of Thyroid meds. So you definitely want to make sure these meds are separated.
Stress can affect the conversion process and increase the production of Reverse T3. So the same amount of FT4 would convert produce less of the usable FT3 and a bit more into RT3 which is useless. Just a theory but given the amount of stress you say you've been under would be at least a plausible explanation.
Thanks, I am trying to. I feel soooooo sick right now. It just seems like I cannot get ahead. All this time increasing, and things are worse than they have been for months =(.
I'm sorry to hear you're not feeling better...hang in there...stress is a major factor affecting thyroid hormone levels.
It sounds like you might have more than one thing to work on...anemia, blood sugar, calcium, and you're also grieving. Give it a while for all those things to resolve.