Yes, there is indeed a chance of pregnancy. Having intercourse on day 13, just one day before ovulation, falls right within your most fertile window since sperm can survive for several days. Susten SR 200 mg is progesterone, a hormone that actually helps prepare and support your uterine lining for a fertilized egg to implant safely?it does not prevent pregnancy. To know for sure, I gently recommend waiting about two weeks from your ovulation date to take a home pregnancy test. Wishing you all the very best!

The extreme weakness and mild stomach discomfort you are experiencing can indeed be common side effects of progesterone (Susten), as it relaxes your muscles and slows digestion. While these symptoms, along with the brown discharge, can sometimes be associated with early pregnancy changes, they can also occasionally signal a threatened miscarriage. Please try not to worry, as these symptoms are frequently manageable. However, it is very important to contact your obstetrician promptly to share how you are feeling. They can perform an ultrasound to give you peace of mind and ensure everything is progress.

Since you missed your nightly dose of Susten SR 400 (progesterone), your next step depends on the time. If it is still early in the day, you can take the missed dose now. However, if it is almost time for your next scheduled nightly dose, skip the missed one and just take your regular dose at the usual time. Do not take a double dose to make up for it. Maintaining a consistent routine is helpful, but a single missed dose is highly unlikely to cause any harm to your pregnancy.

A womb lining of 8.5 mm is ideal for implantation, and confirmed ovulation is a wonderful milestone. Because letrozole works by lowering estrogen, your level of 41.8 pg/mL is normal and expected at this stage. Starting your progesterone supplement (Susten SR) on day 18 is correct and will help support your womb lining for pregnancy. Since you have successfully ovulated with a healthy lining, your chances of conception this cycle are very promising.

Susten 300 contains progesterone. It is important to know that your period won't start while taking it; rather, it is triggered after you stop. Typically, after completing your prescribed course?often 5 to 10 days?your period (withdrawal bleeding) should arrive about 2 to 10 days after taking your last dose. Please make sure to follow the exact duration advised by your healthcare provider, as taking it incorrectly can disrupt your cycle.

Taking Susten (progesterone) and cetirizine together can sometimes cause increased drowsiness, dizziness, or fatigue, which might be why you feel sick. While they are generally safe to use, their combined relaxing effects can be strong. For now, please rest in a comfortable position, stay hydrated, and avoid activities requiring alertness like driving. If your symptoms are severe, or if you experience difficulty breathing, please seek medical help immediately. I highly recommend discussing this with your doctor to safely adjust your medication schedule.