Thanks for your question. Sinus effects and headaches are not on this list of acid reflux symptoms. However, this study from the Medical College of Wisconsin (published in 2000) suggests such a link between the two. You may find this post and response between a GERD patient and an expert on the matter to be helpful.
Much research has shown that acid reflux can effect sinuses and cause headaches. The usual recommendations are to identify and eliminate your trigger foods, wait a couple of hours after eating before lying down, and sleep elevated on a pillow that supports you on an even plane through the entire torso and elevates you 6-8". It is important that you don't just prop your head on pillows or lie on too short a pillow. Doing so just puts extra pressure on your stomach and makes everyting worse. Make sure your pillow is at least 30" long - the 24" ones actually make problems worse. In addition to helping your reflux by using gravity to keep acid down, sleeping elevated helps the sinuses drain and also helps with the headaches.
We hope you find this general health information helpful. Please note however, that this Q&A is meant to support not replace the professional medical advice you receive from your doctor. No information in the Answers above is intended to diagnose or treat any condition. The views expressed in the Answers above belong to the individuals who posted them and do not necessarily reflect the views of Remedy Health Media. Remedy Health Media does not review or edit content posted by our community members, but reserves the right to remove any material it deems inappropriate.