Hi. My due date from my lmp is 2 days off of my ultrasound. Its 2 days later. Does that mean I ovulated later? My ovulation date is 14th or 15th. The ultrasound is dating on the 17th. On the 17th I took plan b after intercourse about an hour after. Was i already pregnant or did i get pregnant from the intercourse on the 17th?
Hello dear, welcome to Ask a doctor service. I reviewed your query and here is my advice. Plan B is highly effective, so you must have been pregnant before. The ultrasound is highly reliable in determining the pregnancy age. Hope I have answered the question. Let me know if I can assist you further.