Bad headaches while taking an antibiotic?

[[Ga...]]

Nothing earth shattering going on, but have been on  an antibiotic for about ten days, and feel I am handling it well except for daily headaches.  No stomach issues just bad headaches.  I had begun to see a lessening of my long time head pain, but sure have had an uptick since I began the antibiotic.

Any one have a similar reaction?

GG