Same thing happened to me, everytime they gave me antheseisa i got worse, Started with some dental work, test, surgery, kept telling them i can't go under anesthesia, Eventually came down with fibro. Although i doubt it gave it to you it probably agravated underlying causes.
Look into, Heavy metals, B12 deficiency, Vitamin D deficiency,Magnesium deficiency, and maybe some cleansing.
Also try drinking lots of water to flush it out.
Anthesesia kills all the b12 in your system, if they dont give you a shot after they wake you up it increases candida/sibo which depletes vitamin D, magnesium and increases heavy metal absorbtion.