daily headaches

[lulu4]

Hi, I'm new to the forum. My dd11 got sick in Nov. and was diagnosed in April with pandas. For the first 3 months of illness, her main physical complaint was stomach pain, similar to hunger pains. In Jan. she suffered a sinus infection and began daily headaches. The infection cleared (maybe not 100%?)yet she still has daily headaches. Do others of you have experience with your kids having frequent headaches? Have you found anything that works? Unfortunately, the pain of either head or stomach is a trigger for her ocd behaviors, so she's anxious pretty much all the time.