Can i drink prune juice on an empty stomach/before a meal?

Absolutely! Prune juice is a very healthy drink. There is no reason you can't drink it between meals, before meals, or during meals.

Yes. For healthy diet: http://www.choosemyplate.gov/., exercise 30 minutes/day, drink enough water daily so your urine is mostly colorless, have safe sex, no tobacco alcohol weed or street drugs. Get HPV vaccine. Wish you good health! Safe sex: https://www.hopkinsmedicine.org/health/wellness-and-prevention/safer-sex-guidelines