It sounds like you had a higher dose of the Botox than you need. It is unlikely to have a droopy nose after the Botox injections, although heaviness in the brows is more common. As you probably already know, the good news is that the effects of the Botox are temporary and in 3-5 months will completely fade off. Don't forget to tell the injector about your feeling of heavy brows and droopy nose so they can reduce the dose appropriately.