Have you told them both you have increased thoughts of suicide? If not, please do it. It sounds like they aren't listening to you at all. I can't see why they'd stick with a med that is making you worse, especially at 16.

There are so many other meds and combinations of meds. I hope you will be more insistent with them. Are you in the UK? Here in the US if you say you are suicidal and you might be a danger to yourself it's the law that they HAVE to do something, and they should.

Come back and let us know how this turns out, and please stay safe.