Thyroid disorders!

My advice is, simply, make sure the medication you're taking for it is the right one for you, stick to your calorie goal, and exercise. If the medication works as it's supposed to, you shouldn't have any problems losing weight. I have hypothyroidism and PCOS and for a long time I didn't even want to try losing weight because, according to everyone else, it would be close to impossible. However, once I got proper medication I felt worked for me I started losing weight, and 13 months later I'm 43 kg lighter.
It is possible, but you need to make sure you're on the right meds.

as others have said, no, its not impossible at all for hypothyroid patients to lose weight. I know because I've dropped 94 lbs so far - and this was after my former endocrinologist told me I would never lose the weight!

My advice is to keep up with the latest research on thyroid disorders, because endo's are notorious for being slow to change their policies and being way behind the research. That former endocrinologist is a prime example; when I was diagnosed with thyroid cancer, he automatically had me take the radioactive iodine, but I've since found that's not always necessary anymore.

And the case is even worse when your hypothyroidism is being managed by a PCP. PCP's are even worse for not keeping up with the latest information - they just go with what they were taught in medical school, and are often way out of date, especially on what is considered "normal" thyroid range - even online medical references are slow to update!

There have been several recommendations for what the normal range should be, and current standards are saying TSH should be between 0.5 and 4.5/5.0. However, there are some doctors and labs who have not updated their policies to this newer range. Also, even if your TSH falls within the upper end of normal, you may still have thyroid disorders - I know from personal experience that the TSH, despite many doctors using it as the end all be all for thyroid function - will not always indicate thyroid problems. You might want to request a full battery of thyroid testing, including T4 levels and even T3 if you can get it (T3 isn't a standard test and in many cases, doctor's don't consider it valid, but there are some folks who have found that supplementing with T3 really helped)

So read up on the condition, and finally, definitely speak up on how you are feeling. If your current medication isn't helping your symptoms, tell your doctor and insist on trying something else - either change the dosage or even try a different kind of medication. I found that the generic didn't work for me at all and I had better results with the name brand (not to mention having a severe allergic reaction to a brand of generic that Walgreens was using.....) Despite what insurances say, not all generics work as well as the name brands, and some generics have different fillers in them that can give you trouble.

In some cases, I know folks who felt better using the natural desiccated thyroid, but that is still very controversial and many doctors will not prescribe it. But if the generic and name brand medication isn't working for you, it may be something to consider.

And finally, realize that correcting thyroid dysfunction takes time - this is why the doctor will not do bloodwork after a medication change for at least 6 weeks. So you need to give yourself time at the current medication level to see if you start feeling better.

In any case, best of luck to you!