Pregnancy Weeks: Can I Be Pregnant from May 5th? - Obstetrics and Gynecology

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To determine whether you could be pregnant from the encounter on May 5th, we need to analyze the timeline of your menstrual cycle and the events surrounding it.
You mentioned that your last menstrual period (LMP) started on May 25th, and you received a shot to induce menstruation shortly before that. This suggests that your cycle may have been disrupted, but typically, a menstrual cycle lasts about 28 days. If we assume your cycle was regular before the intervention, ovulation would likely have occurred around May 19th, which is approximately 14 days after the start of your last period.
The encounter on May 5th, which was before your ovulation, would not typically result in pregnancy. Sperm can survive in the female reproductive tract for up to five days, but since ovulation was expected around May 19th, the timing of your intercourse on May 5th would not align with your fertile window.
You also mentioned that you took a pregnancy test on May 23rd, which was negative. This further supports the idea that you were not pregnant at that time. After your LMP on May 25th, if you did not have any further menstrual bleeding, and considering that you were diagnosed with polycystic ovary syndrome (PCOS), it is possible that your cycle was irregular due to this condition.
On July 17th, when you visited the clinic and were told you were approximately five weeks pregnant, it is likely that conception occurred sometime in late June, around the time you would have ovulated if your cycle had returned to a more regular pattern. Given the information, it seems more plausible that the pregnancy is not from the May 5th encounter but rather from a later date, likely in June.

Regarding your due date of March 16, 2020, this aligns with a typical gestational period of about 40 weeks from the first day of your last menstrual period, which would further support the idea that conception occurred later than May 5th.

In summary, based on your menstrual history, the timing of your ovulation, and the negative pregnancy tests prior to your LMP, it is highly unlikely that you are pregnant from the encounter on May 5th. Instead, it is more probable that you conceived later in June. If you have concerns about your pregnancy or your PCOS, it would be advisable to consult with a healthcare provider who can offer personalized guidance and support.