I?m 32 years old and this is my first pregnancy. At 12 weeks I came to know I have low lying placenta reaching the internal os. Today I am 16 weeks pregnant. My doctor told me to take rest and gave me pause 500 sos if I bleed. Yesterday night I had light bleeding and I took pause 500. I did?t bleed after that today I got clear discharge. I am worried if I might have had a miscarriage? How will I come to know do I need to get a scan done.