Yup,benjimom is right....Please note that there are blood tests that they can do, to verify if you are truly bi-polar or not.
Your Doctor needs to make an accurate diagnosis of whether you truly have a bi-polar situation or not . Get some blood work done, and good luck. I hope all works out for you real soon.
If you truly have bipolar disorder, the antidepresants can make it worse. I would recommend going to see someone who focuses on psych medication be it a psychiatrist or a nurse practitioner who works with this. What made him think you have bipolar?
While a family member may be more motivated to help I would definitely being asking for a psych referral. You should follow-up with a psychiatrist.
Also, since they mentioned the bi-polar possibility, they will have to determine if you need Lithium or not.
Was he looking at your chart when he advised you to do this? If not, I wouldn't trust what he is telling you. I also think it's best to see a psych doctor when it comes to medications, they are much more knowledgeable about them, and can best advise you.
Take care....
I've had my meds doubled with some success. Before I started taking mood stableizers or antipycotic meds, I believe I would see a p-doc that focuses on mood disorders...just my opinion..