Ugh figured out what I did, I am an idiot. I have very low blood pressure normally and it's felt extra low lately - weakness and dizzy spells if I do anything too fast. And of course one thing my anti anxiety meds do is lower blood pressure, and I took a double dose to prevent panic attacks, so I have given myself a total crash. Side effects : nausea, fainting, dizziness, shortness of breath, confusion, weakness, palpitations. All of which I've had in the last few hours.
Thank you NHS direct. Not going to the hospital unless things get worse. Just wish I could get warm now, I have 3 duvets and a radiator full blast and I'm ice cold. Sodded up my day, too. Ah well.