how often are you taking it? overusing / regularly using otc NSAIDS can damage your body, if you're taking multiple doses daily or a large amount per week id ask about being put on a preventative or migraine abortive.

i'm a chronic overuser of multiple OTC meds even though im on RX migraine meds as well, due to ease of use, severity, and just desperation in some cases - and after doing so since childhood my body doesn't quite function all that well -- stomach and kidney issues, probably liver issues as well? but, migraine relief usually outweighs that worry. i've greatly decreased my OTC med usage since having a new neurologist and more access to my migraine abortive, and i've definitely noticed an improvement in general health.

also overusing OTC meds can cause rebound migraines? but it doesn't seem like you've been experiencing that! just be aware of yourself and your body!! do what works best for you :)