Yes, your pregnancy can absolutely still be viable. At 8.3 mm, the gestational sac is still very small. Typically, we do not expect to see a yolk sac or embryo until the sac measures over 10 to 20 mm. Because you have irregular cycles, you are likely just much earlier in your pregnancy than estimated. The fact that the sac is growing and you have no pain or bleeding is very encouraging. Continuing your prescribed progesterone and human chorionic gonadotropin (hCG) support is important. Your doctor will likely schedule another ultrasound in a week or two, which should give you a much clearer and more reassuring picture.

Duphaston (dydrogesterone) is a progesterone hormone that can definitely cause symptoms like bloating, cramping, and dizziness, and it frequently delays your period. While a negative pregnancy test at 12 days post-ovulation is quite reliable, it is still possible to be pregnant if ovulation or implantation occurred slightly later than expected. Since you are now 17 days post-ovulation, I gently recommend taking another home pregnancy test today for a definitive result. Please consult your doctor to discuss these symptoms and get guidance on your next steps.

It is actually quite common and normal to experience mild vaginal spotting a few days after an oocyte retrieval, even while taking Duphaston (dydrogesterone) for luteal support. This spotting often occurs as your body heals from the retrieval procedure or adjusts to fluctuating hormone levels. Please try not to worry, as this is usually not a cause for concern. However, if the spotting turns into heavy bleeding, or if you experience severe pelvic pain, fever, or extreme bloating, please contact your fertility specialist right away.

Having some bleeding or spotting 13 days after your IUI while taking Duphaston (dydrogesterone) can happen. It may be due to hormonal fluctuations, breakthrough bleeding, or occasionally implantation. Because you are 13 days post-procedure, the best next step is to contact your fertility clinic for a pregnancy blood test. Please continue taking your Duphaston as prescribed unless your doctor advises otherwise. Your clinic is your best resource to provide personalized guidance and support right now.

Duphaston and Nidagen are both progesterone supplements used in pregnancy to support the uterine lining and help maintain pregnancy. The main difference is that Duphaston is a synthetic progesterone (dydrogesterone), while Nidagen is a natural form of progesterone, often given orally or vaginally. Both are effective, and neither is clearly better; the choice depends on your doctor?s preference, your tolerance, and specific clinical needs.

In early pregnancy, even a few days' difference in conception can affect what is visible. Duphaston (dydrogesterone) is a hormone that supports your uterine lining, helping to secure and protect your pregnancy, especially given your history. For precautions, please rest as much as possible, avoid heavy lifting or strenuous activity, and try to stay relaxed. If you experience severe cramping or heavy bleeding, contact your doctor immediately.