"Normal" only means that your results are within the reference ranges; doesn't mean they are right for you. You should try to get copies of your lab results so you can see exactly what's being tested (hopefully, not just TSH) and what the results are.
I am sorry to hear of all you've been through. A good blog for you to read is hypothyroidmom.com. The author has been through the same thing and has a wealth of information to share on hypothyroidism and pregnancy.
My T3 & T4 have been told are normal. Not sure of those levels
Are you getting tested for the Free T3 and Free T4, along the TSH? FT3 and FT4 are the actual thyroid hormones and only by measuring those, can you know whether or not you have adequate thyroid hormones, for both you and a fetus.