Hello lo0kin for women pregnant approx 6 to 8 weeks confirmed i need advice.thanks?

well i was in the doc on dec 15 and they were only able to see a yolk sac as they call it and no fetal pole i have to go next week on the 29 according to them on dec 15 i was 6 weeks 1 or 5 weeks i get confused with the gestational age .. my last lmp was around nov 2 .. i am tragically worried because i went through an ault on oct 3 around 4 am and well on oct 6 i went to the hospital and took plan b and other meds and well i do have a boyfriend and now am pregnant .. reading this little info on my situation are you able to tell me if my weeks are correct to the doc only seeing the yolk sac and my lmp .. can there b a coast clear for me in other words should i be panicking .. as to the baby being from the ault ... hopefully any ladies around these dates can help me ease my mind just a little by telling me how far along are they and when did they conceive thank u and god bless....