i have had mtp with misoprostol and mifeprestone two years back due to post coital pill failure.now i have a planned pregnancy of 6 weeks.i'm having very minimal pinkish red to brown secretion(less that an ml or two per day).it does not soil my pads. my gynecologist has given me hcg inj.susten tabs and duphaston bd. also i went in for a usg abdominal at 5 weeks 6 days and the foetal pole was not visible,but yolk sac was present. should i apprehend about the bleed,or is it normal.and whether the abdominal usg cannot visualize the fetal pole ,there was a difference of three days ,the radiologist said.lmp-20 october 2012. the lh surge as per my ovulation strip was on the 2nd of November and we timed it on the 3rd evening.this was the only time in this month we planned for conception.have hypothyroidism and on thyroxine for the past two years.