Round'ish brown chunk fell into the toilet from my vagina. was it a miscarriage? i have a picture aswell?

If you are sexually active and missed your period by more than a week, it could have been a miscarriage. It could also have been just a blood clot from menstrual bleeding. Have a healthy diet, exercise 30 minutes/day, drink plenty of water daily so your urine is mostly colorless, have safe sex, no tobacco alcohol weed or street drugs. For nutrition: http://www.choosemyplate.gov/.