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Menstruation without any pain or cramps is absolutely normal. Bleeding can vary from person to person and usually periods last between 3 - 5 days.

If you had an emergency contraceptive pill within 12-15 hours of intercourse, you are usually protected. It's common to experience changes in your period after taking the pill. Wait for your next period; if it's late or abnormal, do a pregnancy test. Also, using regular birth control methods is important to prevent pregnancy in the future.

If the uterus is removed, as in a hysterectomy with preservation of ovaries, they usually work normally until natural menopause. But this may differ from person to person and the surgical approach. You should talk to your gynecologist and with the surgeon that did your surgery for details about you case. They will inform patients about post-surgery ovarian function recovery.

If you miss your menstrual cycle after you have had unprotected sex and you think that you are pregnant, taking a pregnancy test is highly recommended to avoid self-deception.

There is still a risk of pregnancy even if ejaculation doesn't occur inside the vagina. Pre-ejaculate fluid, also known as "pre-cum," can still contain sperm and lead to pregnancy. Get a test done to confirm about pregnancy.

If you're looking to terminate pregnancy then it's imp that you consult a professional for guidance based on your circumstances. 

You're feeling worrie­d about maybe being pregnant afte­r unprotected sex. Thre­e days it is still really early on. Some­ signs of early pregnancy can be fe­eling sick, tired, or sore bre­asts. To avoid getting pregnant, it's a good idea to take­ emergency birth control, which can work if you take­ it within 72 hours of having unprotected sex.