Reddit reviews Your Healthy Pregnancy with Thyroid Disease: A Guide to Fertility, Pregnancy, and Postpartum Wellness

>getting pregnant with a 3.41 TSH is totally fine

It's not fine, my endo and the book below both say that the ideal range for healthy conception and to ward off miscarriage is to start at 2.5 TSH. However, she bumped me to 1.08 TSH.
https://www.amazon.com/gp/aw/d/0738218677/ref=mp_s_a_1_1?ie=UTF8&qid=1480689115&sr=8-1&pi=SY200_QL40&keywords=hypothyroid+mom&dpPl=1&dpID=51WEmDHtYeL&ref=plSrch

Find another endo (easier said than done I know). You may have a T3 issue and not T4 or tsh. I had to demand to get my T3 tested. While you wait for that appointment, try out an autoimmune paleo diet (for the antibodies), or at least reduce grains and sugars. Take selenium and vitamin D to help your thyroid. Sleep in on the weekends or go to bed as early as you can. If they suspect that you have insulin resistance and not full blown PCOS, try reducing your carbs and increasing healthy fats while you wait.

I've been reading this book, Your Healthy Pregnancy with Thyroid Disease and although it does mention the link, it also outlines strategies to reduce risk. As I understand it, the more 'in remission' (lowered antibodies to acceptable range) one's Hashimoto's is, the better.

Sorry for your loss. I have hypothyroidism and Hashimoto's as well. 2.96 is getting too high, you are right (even though, sadly, a lot of doctors would ignore it, at least from what I've found in my personal experience). See #5 under this link for optimal TSH: http://thyroidpharmacist.com/articles/hashimotos-and-pregnancy/ Additionally, consider this book, they go into all the tips to prevent miscarriage and getting TSH into optimal range (you can try to do so without thyroid replacement hormone medication through the AIP diet and supplements, but most thyroid patients will need some form of thyroid hormone). https://www.amazon.com/Your-Healthy-Pregnancy-Thyroid-Disease/dp/0738218677

I can echo this. Some doctors will tell you that any levels below 2.5-3.0 for TSH is fine. But more recent research points to levels needing to be near 1.0. My TSH was at 2.5 this summer when I got pregnant and I ended up miscarrying at 7 weeks. Was it because of my hypothyroidism (Hashimotos)? We will never know because no doctor thought to test my TSH levels at the time of the miscarriage. Since then, this book was recommended to me: Your Healthy Pregnancy with Thyroid Disease I strongly suggest reading this book for all of the information but also for its ability to empower the reader to be a self-advocate in the doctor's office.