I refilled my prescription two days ago but forgot to put the new bottle in my purse so yesterday I missed a dose. I only take 30mg a day for fibromyalgia. But all day today I’ve felt like I had vertigo. Every time I turn my head too quickly or go from sitting to standing or vice versa I just feel really dizzy and off. It’s really uncomfortable and makes me nervous about taking this medication at all. Does this happen to everyone? Is it normal?