Dizzy spells, lightheaded.

Yes I think your light headed symptoms are causaed by the Bisoprolol.  I know when I take Propranolol (the equivalent of Bisoprolol) that the effects last for a few days even after I have stopped taking it.  You need to get started on an antithyroid drug as soon as possible to control your hyperthyroidism.  I would not be dismayed that the doc had to look up symptoms in his handbook.  Doctors have a lot of information to cover and have to keep on top of a lot of conditions.  However, that said, the Graves patients that do the best in recovery are those that do their own research and take responsibility for their own recovery.  I did that even after my doctor started me on an antithyroid drug.  When on the drug, my T3 and T4 level normalized right away but my TSH remained at less than 0.01 for 2 years.  I did some research and learned about L-carnitine which is an amino acid that is naturally found in the body but gets depleted in hyperthyroid patients as it is lost from muscles and urine.  So I took L-carnitine supplements and it greatly helped my recovery to the point where I no longer have antibodies.

I have been getting dizzy spells and been hyperthyroid for 6 years. Docs said they were nothing to do with hyperthyroidism but weren't interested in finding out what caused them. Unfortunately it's a long road to find a good endo who cares enough to help if you aren't suffering from a text book case. 6 years on i have finally found a female endo - what a difference.  Caring, interested in my symptoms and willing to get answers. My experience of male endo's is answers such as "it's all in your head, thyroid doesn't do this" or just simply there must be an underlying cause. No interest shown at all and they don't seem to listen to a thing I say. I suppose they put it down to me being female ugh! 

I find there are good and bad docs in both genders.  The patient that empowers herself and insists on being treated respectfully usually makes them wake up.  If they are that bad, I don't go back to them.  I have been so fortunate to have such a great general practitioner with common sense as well as a good endo.

Just in the last month, I have had a lot of respiratory symptoms.  I am allergic to dust and there is a ton of it in my house since the landlord installed a new furnace.  I think we can strengthen our immune systems though.  I need to see a Naturopath.