heartburn and headaches and belching

Anyone have issues with all three?  My daughter has been on Nexium and birthcontrol pillls.  when they doubled her Nexium, she started getting bad headaches and lots of belching.  We are trying to wean her off the Nexium ot see if the headaches are a side effect but the acid reflux is getting quite bad.  What's with the belching and any ideas on what to do with it?  Is it stress related?  How long have people been on the Nexium?

[CalGal]

Headaches can come from the PPIs. Belching can be found with either GERD or gallbladder issues. She might want to consider trying another form of birth control rather than a hormonal form since in some people changes in hormones can make GERD or gallbladder issues more uncomfortable.