I have recently had unprotected sex with my girlfriend an she popped an plan b but hours after she pop it we had unprotected sex again. is she prego?

Unlikely: Plan B taken within 72 hours of sex is more than 90% effective. Your gf should be on regular birth control rather than relying on plan B. She may get an implant or an IUD. For good health - Have a diet rich in fresh vegetables, fruits, whole grains, milk and milk products, nuts, beans, legumes, lentils and small amounts of lean meats. Avoid saturated fats. Drink enough water daily, so that your urine is mostly colorless. Exercise at least 150 minutes/week and increase the intensity of exercise gradually. Do not use tobacco, alcohol, weed or street drugs in any form. Practice safe sex