Discouraged

I have a failing thyroid (Hashimoto's) and PCOS and I've lost 50 pounds, so it's totally doable. First things first, you need to make sure your goal is appropriate for your stats (age, height, and current weight) and then make sure you are logging ALL your solid food with a scale and liquids in a measuring cup. Eyeballing or using all measuring cups/spoons will not cut it as you're likely eating more than you think. If you don't have a scale, get one, and use that without fail for a 4-6 weeks and see how you are doing. If nothing has changed in that time and you are on point with your logging, then I would be paying a visit to my doctor (or endocrinologist) with my food logs in hand to discuss it.

Two weeks is not enough time, hang in there! The stories of people who change their calorie intake and lose 20 pounds in a week are misleading! I've got hashimotos and am down 30. There are a couple things that have helped me: eating five small meals (not three meals and two snacks), 20-45 minutes of cardio daily (I just walked at first and moved up from there) and weight training three times a week, taking measurements along with my weight so I could see changes even if the scale didn't budge. It can take a while to get the scale moving, but you can do it!