Sensitive, whitening, Gel??

Hi, my detist tells me to use a gel with my sonicare electric toothbrush rather than a toothpaste and i have always bought whitening products because i like the results. The problem i have is that now i am suffering with sensitive teeth and i cannot find any sensitive, whitening gels in the supermarket. Does anyone know of a company that makes sensitive whitening gels? I can find sensitive gels and whitening gels but never the two together! Thanks.