You may have abnormal spotting due to a pelvic infection, medical condition, or cancer. Try not to worry because there are many harmless causes of spotting. Instead, monitor yourself for other possible symptoms of a medical condition. See your doctor if you notice these symptoms:  Easy bruising Fever Dizziness Abdominal or pelvic pain Abnormal discharge Polycystic ovary syndrome (PCOS) is a hormonal condition that commonly causes irregular periods, among other symptoms. As part of your irregular periods, you may experience spotting. If you know you have PCOS, consider if it might be the reason behind your spotting. Symptoms of PCOS include irregular periods, excess facial and body hair, acne, male-pattern baldness (hair thinning at your temples or your crown), and enlarged ovaries. See your doctor if you suspect you may have undiagnosed PCOS. You might have bleeding after sex due to scratching inside your vagina or because of a medical issue. Sometimes this is no big deal, but it can be a cause for concern. If you've only experienced spotting once, it's likely nothing is wrong. However, it's best to talk to your doctor if you have spotting after sex more than once or you're very concerned. If you have vaginal dryness, you're more likely to have spotting after sex. If this is the case, using a lube may help you avoid spotting in the future. Spotting can happen in the early days of pregnancy when your baby attaches to the lining of your uterus. However, it may also happen in the first few weeks. If you may be pregnant, take a home pregnancy test to find out if this could be the cause of your spotting. If the results are negative but you don't get your period, take the test again or talk to your doctor. Try not to worry, but it's possible that spotting can be a sign that something is wrong with your pregnancy. Go to your doctor to make sure you're not have an ectopic pregnancy, which means your baby is growing in your fallopian tubes. Additionally, your doctor can make sure you aren't experiencing early symptoms...

TL;DR in Indonesian:
Perhatikan apakah Anda mengalami gejala lain. Pastikan apakah bercak darah merupakan gejala PCOS. Pertimbangkan apakah bercak keluar setelah hubungan seksual. Tes kehamilan jika ada kemungkinan Anda hamil. Periksakan diri ke dokter jika Anda hamil. Evaluasi risiko penyakit menular seksual. Cek efek samping obat yang Anda minum.