Hi. My situation is the other way around. I have hyperthyroidism. Which is suppose to make me lose weight (it didn't for me lol) so I take medications to fix it. My fear is that the meds are preventing me from losing weight. But I am working hard, watching my calories and doing all the excercise that I can. I am low on meds but I am taking what I can, until I see my specialist and see if he can help me. I would suggest that you talk to your doctor. Maybe he/she can help you. Any excercise you do is great. Don't stop. Continue your meds and follow doctors orders. It might take a bit longer but you will get your weight were you want it. I will pray for you. And God Bless.
ADD: I hate water but I make myself drink it. Make sure you get all the water you can stand in every day.