During period?? Seemingly the chances are low - since your friend were still in periods when she had sex. But to assure about it - better to do a home pregnancy test and calm down. And these are not conclusive signs of any sort for pregnancy. Symptoms don’t come so soon anyway. It’s perhaps fear and nervousness more than anything else. Read here: https://lovematters.in/hi/resource/faqs-period https://lovematters.in/hi/news/sex-during-my-period-do-i-need-contraception https://lovematters.in/hi/pregnancy/home-pregnancy-tests-dos-and-donts If you would like to join in on a further discussion on this topic, join our discussion board, "Just Ask” https://lovematters.in/en/forum