Hi TJ! I was diagnosed with Hashimoto's shortly before I got pregnant with kiddo #1. I have to agree with the last poster, as it is a constant struggle for me as well. I weigh more now than I did when I was 42 weeks pregnant with my second!
I also highly suggest working with a Naturopath and/or Homeopath. I have found that there are some things about Hashimoto's specifically that allopathic medicine does not even consider. An endocrinologist is likely to treat the thyroid, and call it good as long as blood levels remain within the normal range. However, many symptoms may still linger, and in some cases, even get worse.
Hashimoto's is not a "thyroid condition" per se, but an *auto-immune* condition, and so needs to be treated a bit differently than Hypothyroidism. The immune system needs a lot of support, and the first place to start with that is the digestive tract. A naturopath will know this, and will order bloodwork that goes beyond the standard TSH and T4 testing that MDs do.
I also find that I need to do a lot of work within myself - meditation, visualization, affirmations, etc. I also notice that while I experience chronic fatigue, depression and have a hard time motivating to exercise, I feel much better when I actually do it - it is an integral part of feeling good. However, losing the weight is no easy feat, and is a really sore subject with me right now as I seem to keep gaining and gaining with little control over the matter.
I suppose I'm also intersted in other responses!
Best wishes to you...wishing you health and happiness!