hi,
it could well be thyroid related, particularly as you are not responding well to the meds now, and its just started. Your endo needs to know about this.
i am hypo (on replacement) not hyper and i have been getting night sweats in the last few months, but mild only....
hormone changes of pregnancy do many funny things, but what you are describing sounds excessive.
let us know how you go.
Its something you should mention to your Dr. your hormones are out of wack now. Personelly i have never experinced bad sweating while pregnant. Ask your Dr.
Good luck