Daily headaches while already on a prescribed migraine-prevention medicine suggest the current plan may not be fully controlling it, which is really a conversation for whoever prescribed it rather than adding something new on your own.
Next Steps
Keep a simple headache diary (time of day, triggers, how long it lasts) and share it with your prescribing doctor so they can adjust your plan. Also check your sleep and hydration, since both commonly add to medicine-resistant headaches.
Health Tips
See a doctor urgently if this becomes the worst headache you've ever had, or comes with vision changes, weakness, or vomiting.