I have an exam today and my Gerd is acting up

I have an exam in 5 hours. I'm feeling moderately prepared for it as I have been studying but my gut is really bothering me. I felt it come on last night so I took a swig of liquid gaviscon and was able to sleep. I had nightmares all through the night and woke up to nausea and gagging feeling. It feels like I've been vomiting or gagging all night even though I have no recollection of waking up. I've tried more Gaviscon, made a fresh ginger tea but it's not really letting up. I'm feeling really stressed, shaky and like I could wrench but the nausea isn't bad enough to warrant that.

It doesn't help I have back to back exams this weekend. I'm overloaded. I have exams, a car that needs repaired to make it road legal and I'm also broke. Need some moral support. Also doctor gave me nausea meds and PPI. I'm a little scared of taking the new nausea medication, especially with my current ssri and Ritalin, I've got a health anxiety thing.