I have started using neilmed sinus rinse to combat my sinus troubles, blocked runny nose and post nasal drip, recurring sinus infections, allergies... My sinuses had been OK for a few weeks but My doctor has suggested surgery. I thought I would try the sinus rinse as I've heard so many good reports. Since using the rinse I have found my post nasal drip worse and I have a feeling like there is loads of stuff deep back in my nose but when I blow only a little bit comes out. Can the water go into your sinuses and stick there? I know its sounds nuts but that's exactly what it feels like.