Is it a hormone imbalance? Plz help?

Hi my sister has hypo thyroid, she takes thyronorm 112 one tablet every morning, 3 months back she had started dinor (dinogest) for her adenomyosis which gave her a lot of dizziness so she stopped it but still her dizziness is not going , also NO medicine is working on her body be it a vitamin or a vertigo medicine or a pain killer, they all make her feel worse and give her a headache , her thyroid is normal so is her MRI brain , also the inner ear is clear but the dizziness doesn't stop and NO medicine works on her. Before taking dinogest all the medicines used to work on her but now nothing works on her body can someone plz tell me why?? Is this a hormone imbalance ???? What can be done to help her as She's been bed ridden since three months due to NO medicine working on her and the dizziness not going. can someone plz help???? Thanks Sneha