What med is it and dose? You could google the max dose of your med - if taking your med twice is still under the max dose, then you should be ok, though there may be more side effects like sedation, but that's probably a good idea at this point. Keep calling until someone rings you back! Writing a script is a good idea and I find it very helpful cos I get nervous on the phone and forget what I want to say.

I hope you stabilise soon

*Willow*