Took 800mg ibuprofen for pain and 325mg naproxen at same time. did not mean to mix them. am i going to be ok?

You should be OK: But, try to be w/ someone so that if you feel anything troubling, you can be helped at Urgent Care or an ER. There are no reported interactions but that's high doses and you can feel gastric symptoms and very groggy. Find a way to prevent such mistakes if porrible - it's good you noticed but prevention is best! Pain mgmt needs advice from Dr. Ask! Be well!