Possibly you are extraordinarily sensitive to the eyedrops. This happened to me, not with the cataract surgery which worked very well, but with another eye condition. The more the eye hurt, the more I put the drops in, and then the eye hurt even more. (As I remember, the problematic drops were antiseptic drops.) Finally I got the doctor’s attention and he told me to quit the drops, but monitor how my eye behaved closely. It worked.

Hoping this can be resolved quickly for you.