facial swelling

I applied Preperation H under my eyes to reduce "bags" . I have heard about this remedy for years and finally decieded to try it. The next day , the right side of my face is swollen. It started at the cheek area and now...2 days into it, it has spread from below my eye to my jaw line!!

Please let me know if you have ever heard of this, could it be an allergic reaction to the PH or is it something else. It is getting painful and is very tender to the touch.

Thank you for any help.

margaret