I think I can be a bit reassuring here, as I've checked back in your posts and see that your profile looks quite similar to mine. I was diagnosed in April '14 with a TSH of 240, and my recovery has been slow but steady until after about a year I felt better than I had for years, and I seem to be still improving. Hold fast! Your current symptoms are almost certainly due to under-medication, and it's still only a few months since your diagnosis. It's frustrating how long it takes to recover, but it's taken you years to get this ill, so it takes your body a long time to recover.
Here's my brief timeline, to show you that you CAN get well:
April '14 - diagnosis, started on 25mcg levo rising in 2 week intervals to 75mcg. Felt desperately ill at this point (as I was about at the point of collapse, I guess).
June '14 - Feeling much better but aware still needed more - went up to 100mcg.
Sept '14 - Recurrence of digestive symptoms (which were what sent me to the doctor in the very first place, and my digestion was slow to recover), and then woke in the night with terrifying palpitations which sent me to A&E - admitted for 2 nights, but they couldn't find anything wrong. They tested my thyroid and found it 'normal' - but I'm a member of Thyroid UK and thought I knew better ;), and indeed, my TSH was 3.99 (range 0.4-4.0), obviously enough to put me in hospital, because I am NOT normal! After advice on here persuaded my doctor to put me up to 125mcg, which I've been on ever since, in spite of discouragement from the endo and a new GP. But that's when I feel well - when my TSH is 0.05 or below.
Oct '14 - that put me back about 2 months, but I recovered on the new dose and my results been stable since. Went gluten-free on the advice of a nutritionist (and on here) and haven't looked back. Had vit D tested which was 17, so went on supplements.
Jan '15 - went dairy-free, which tipped me over into the 'radiant vitality' bracket Spent this summer walking, climbing hills and cycling, feeling fantastic.