Is it safe to take Advil on an empty stomach?

Maria

Sometimes when my period starts I wake up in the middle of the night with really bad cramps and back pain. Is it okay to just take 2 Advil (400mg) even though I'm not taking it with a meal?

I know it's best when NSAIDs are taken with food to,reduce chance of internal bleeding.

Also, my period is a week early and quite painful. Should I be worried?