What should I do when I am pregnant but the ultrasound does not show the gestational sac?

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Hello doctor. I'm pregnant for the first time, the day of my period this month is February 5, I have mild pain in the lower right abdomen on February 3 (I went to a clinic near my house with a probe) but no gestational sac is seen. Today, February 6, I was 1 day late for my period, tested the test on two lines (the remaining line is very bold with the previous line). I have a little pinkish pink blood like very pale pink with a little mucus. I was too scared to go to the doctor, the 1st 2D black and white ultrasound showed no gestational sac, then the doctor gave me a blood test and the Beta HCG index was 1559. Then the doctor said my HCG was too high, but I couldn't see it. gestational sac, let me do doppler ultrasound. The doctor's results were recorded as: monitoring the gestational sac in the uterus in the early stage. The doctor has an appointment to reschedule for a week after February 13. Can I ask you to have such an ultrasound too many times? Do I have to have a gestational sac in my uterus? Or is it because I'm too early, so the gestational sac is not clear? I heard doppler ultrasound recommend not to use for the first trimester of pregnancy (because of the high heat effect). I am very worried, can you give me more advice? I would like to thank you.
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Answer
Thank you for submitting your question to Vinmec Health System. If you test Beta HCG 1559, you are definitely pregnant. The preferred ultrasound is the transvaginal ultrasound. Ultrasound results do not confirm the gestational sac in the uterus, so it is necessary to check many times, consult many doctors to rule out ectopic pregnancy, ultrasound does not affect the fetus. Your case should repeat beta HCG, blood progesterone, ultrasound after the last 48 hours. Wish you luck and good health.
Master. Doctor Ta Quoc Ban - Doctor of Obstetrics and Gynecology - Department of Obstetrics and Gynecology - Vinmec Phu Quoc International General Hospital.

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