If it's any help my first post on here was to say "Will I ever feel normal again?" And the answer was "Yes" and indeed I do. I used to think I had lost the me I used to be and this strange angry person had appeared in my place.
I started with 20mcg of carbimazole for four weeks, had a blood test and got a letter from my endo who I hadn't seen at that point. She said to increase my carb to 40mcg. I did that for the next two months, became hypo which wasn't much fun at all. I think I stayed grumpy and horrible and felt pretty rough - well very rough, until I saw my endo and was given levothyroxine to take along with the carb.
Once I started on that, I saw my endo regularly and had my Levi increased until I was taking 100mcg, still along with the carb. When my doctors were happy with my bloods I stopped the lot and I've been in remission ever since.
Eventually the palpitations settled down - a lot of people are given beta blockers to deal with the palps but I have asthma so I couldn't be given them and had to sit it out.
You need to be really kind to yourself, you probably don't look it on the outside but you are really quite ill and that makes it hard for people to get into their heads. My husband and friend next door couldn't decide on a date for a Christmas get together with our neighbour's so he came in and said that he thought we could host instead! I was only diagnosed in November - well if I say I lost it that would be a complete understatement. I really lost it big time. I felt like I was turning into some sort of monster. I know he knew how ill I was feeling but I don't think he actually got the message even though he shopped and cooked etc.
Anyway, I found this site and never looked back. Loads of people here who knew exactly how I was feeling. Loads of support.
Make sure your vitamins B12 and D along with ferritin and folates are high in their ranges. My pharmacist came out when I started the carb and told me to take vitamin C with it so I always took 1000mcg vitamin C - mine had zinc in there too. I take CoQ10 as well. I cut out junk food and tried to eat well, lots of fish, fruit and veg. I was determined to do things I liked so I stuck with my gym because I liked the people I met there, I stuck with my Pilates but my teacher is a qualified physiotherapist and she really helped me.
My GP and endo wouldn't test for vitamin D or B12 or T3, so when I discovered Blue Horizons accredited labs through TUK I had blood tests done regularly - I still do because I went totally gluten free over a year ago to see if that would help eliminate my thyroid antibodies (it did!!)
It was a long time before I went back to long distance walking but I can do it now.
I jotted down how I felt every day, just a few lines in a notebook. I also kept a note of all my blood test results and any changes of medicines. That was really useful, both when dealing with my doctors - I needed an increase in Levothyroxine and was able to use that to persuade my GP to give it to me, I don't think she wanted to interfere with what my endo prescribed. I used to jot down any questions I had for my endo. It was also interesting to be able to read back and see how much I had progressed over time.
I'd say hang in in there, take as much rest as you possibly can, my husband did all the shopping and an awful lot of cooking when I was at my worst, just be very kind to yourself and time will help you, oh and keep looking on Healthunlocked TUK - TUK has its own amazing website thyroiduk.org.uk/tuk/index.... you will find loads of good information there too. Good luck, you're definitely not alone.