Brown vaginal bleeding. In india?

Hi. I am an 18 year old student. My girlfriend is 19 years old. She had her regular menstrual period bleeding around 1st of may. We tried having sex on 10th may, but did not because she found it too painful. So we did not even have 'sex', and no ejaculation was there. But, I had masturbated, and I remember wiping my hand clean and then I fingered her. But just to prevent any issues I gave her an Unwanted 72 tablet within half an hour. Today, 6 days after that day, on 16th may, and nearly 10-12 days after her menstrual period bleeding, she said she is bleeding. Brown blood, thicker than normal. So here are my questions - 1. What are the chances of her being pregnant? 2. I have heard that within one month of sex pregnancy can be easily terminated by medicines. In our case it has only been 6 days, so no matter what we want to take those medicines just to be safe. Can you tell me the name of those medicines easily available in India ? Thankyou. It's very urgent. Please help me.