Sudafed- milk supply

Hi everyone! Hoping for a solution. I suffer from chronic sinusitis and unfortunately no more than 2 weeks after having my lo did I get a nasty sinus infection. Doctor prescribed me Sudafed and antibiotics to help clear up the inflammation but I spoke with my lactation consultant and she said it would dry up my milk permanently. Yikes! I had already take a low dose for a couple of days and do notice a difference. Is it possible to get my milk supply back? How would I do that? Help! Any advice would be greatly appreciated.