My 9 year old daughter appears to have a sinus infection( facial pain, stuffyness, cough for a week, we have been to the pediatrician twice and she is now on antibiotic but the past three night prior she has been vomiting on when lying down and trying to

Inner ear issue?: Inner ear is balance organ, often affected by sinus infection. Often positional vertigo, nausea, vomiting. Call your doc.

Drainage: The drainage from the sinuses and/or the antibiotic could be causing the vomiting. Contact your childs physician and explain to them what is going on.

Workup and Mgt: The treatment of sinusitis can take weeks to effectively treat a sinus infection. Vomiting may be due to another infection such as pneumonia, secondary to swallowed drainage and a number of other conditions. I would advise a clear liquid diet for one day, and following up with your pediatrician. I also would advise checking her temperature a few times during the day and pm.