I think i passed a decidual cast,or a large part of my uterine lining.scared of pregnancy.been having monthly bleedings and dg test was neg at 5-6w then at 9-10&15w lower tum has been bloating.boobs bigger. stomach noises, constipated? had sex 20wago?

If you had a period since your episode of sex, you are not pregnant. You may have gained weight and should reduce your intake of food to address these issues. 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!

Pregnancy tests measure hCG (produced by the placenta in pregnancy) If you have had negative tests at 3 different testing times, you are not pregnant. Bloating, stomach noises and constipation are more probably due to diet and intestinal flora imbalance. Try taking a probiotic and eat a diet rich in fruits and veggies along with lots of water. Breast increase/tenderness could be menstrual related.