I Take The Pill Naproxen 500 Mg Every Month For

I take the pill naproxen 500 mg every month for my excruciating pain from cramps, I vomit , have diarrhea & the worst pain you can possibly think of! My question is my husband wants a baby if I was to be pregnant one of these days will the pill harm the fetus in any kind of way? Development, or any medical problems?