After an implant placement I have sinus-mouth connection, should I be worried about it?

During the drilling for CeraRoot zirconia implant the sinus was punctured then lifted. After the placement of the implant on #14 which immediately followed the extraction I got an unpleasant swooshing from sinus to mouth. It feels salty on the lingual side where it drains occasionally. What can be done to seal it? What should I do to prevent infection? I heard antibiotics are not very effective for dental applications. Is there anything else? Thank you!