Hi, Foaming of urine alone cannot be a confirmatory test for pregnancy. It is essential to rule out pregnancy by taking an urine test to detect Hcg hormone levels. Blood beta Hcg levels are even more sensitive in detecting pregnancy earlier than urine test. After confirming pregnancy, drugs for medical abortion can be taken as soon as possible. Abortion cannot occur without any bleeding or abdominal cramps. But the complications like heavy bleeding and infections can be prevented by starting the pills as soon as pregnancy is detected. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. Saranya Ramadoss, General & Family Physician