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A faint line may mean you are pregnant, but it could also be due to various factors such as the test's sensitivity, the timing of the test, or evaporation lines. For a more accurate result, you can repeat the test using the first urine of the morning, as it is usually more concentrated.

After your periods for 10 days, it is less likely but still possible to get pregnant. Some women may have an ovulation disorder that will lead to them being pregnant in the early cycle. Symptoms such as abdominal pain or spotting may indicate that ovulation has occurred. To avoid the risk of pregnancy, you can either use contraception or refrain from engaging in unprotected intercourse during this period.

If the intercourse was rough, it could just be irritation making itself known, or possibly even a small tear in your partner’s vaginal wall. Look out for any sign that it might have been more than that, like if there’s pain at all beyond normal discomfort during sex, or weird discharge afterward. 

Pregnancy might be a possible. But you must visit a gyneclogist to confirm it, they can suggest you necessary tests to confirm pregnancy