I'm on 50mg one day, 100mg the next.
Appears I only have gestational thyrioditis at the moment, BUT I have since learnt an aunt had it when she was younger and now 40 years later has developed coeliac's and type 1 diabeties.
My mum also has bi polar from severe PND (different side of family to aunt) but all very interesting, as now my endo dr will prob keep me on the thyroxine and then more tests after baby is born.

My symptoms were:
Hair loss
Diarrhea
Racing heart
Tiredness
Insomnia
Dry skin
2 blighted ovums
Long menstrual cycles - 33 days plus

Appears mine went hyper then hypo.
Currently levels are good.

Try not to google too much, but it can help to write down symptoms daily.