<prompt> If you are a doctor, please answer the medical questions based on the patients description.I will be 7 weeks pregnant this Thursday. I had a vaginal ultrasound on Monday and the doctor did not see a heartbeat. He told me to expect the worst but that he would do another ultrasound on Friday. I have had mild spotting mostly brown for about a week. My hormone levels have been good so far, though he did want to see my ChatDoctor levels rise even higher they were 4700 at about 6 weeks and my progesterone was 23. He told me to do another bloodtest to see if the hormones are continuing to rise. This morning I woke up to heavy bleeding and passed some pretty large clots. I was convinced that I miscarried. The doctor called me today with results of the bloodtest I did yesterday. He said that the hormone levels look good, but that does not necessarily mean that the embryo is developing normally. Since I am RH negative, I am going in tomorrow for a Rhogham shot and the doctor may do another ultrasound to see if I have miscarried. If the embryo is still there, is there a chance it is still too early to see the heartbeat? I should add that last week he did see the gestational sac in the uterus, as well as afetal pole.  <response>: Hi, Thanks for the query. Fetal heart sounds are seen by 7 weeks of pregnancy in USG scan. But as the date of conception ovulation time tend to differ from person to person, its better to wait for a week repeat the scan to confirm absent heart beats. - heart beats are not seen when heart is not developed, but all other signs hormonal set up is like pregnancy. The condition is called blighted or chemical pregnancy. This is usually expelled out evacuated. Anti D is taken after evacuation. Thanks. 