Pregnancy Gain.

Ive always been over weight. My entire life. Usually staying around 200lbs. Well then I started to gain weight like crazy. 60lbs in less than a year. So about 14 months ago I was diagnosed with hypothyroidism. After being put on levothryoxine I lost almost 20lbs in a few months of doing nothing different. I was 265lbs at my heaviest. After losing the 20lbs I was inspired to lose more. And over the next year I lost another 20 lbs through exercise and portion control. Losing weight while having a hypo active thyroid is nearly impossible. And was down to 227. Now 11.5w pregnant and Im up to 240lbs 😞 it makes me feel horrible. I eat better now than I ever have. Baby only wants fresh fruit and veggies 90% of the time. And I limit my eggs and red meat. I in no way starve myself. 3 meals and snacks. Just healthy. Im not as active as I was due to being so sick. And cut out pop and sugar drinks. And still have gained 13lbs. My OB checked my thyroid levels which were normal range. What am I doing wrong here?