1st day of last cycle 18th of dec. is it possible to hav concived on the 27th?

Question

last day was the 22nd or 23rd

Answer 1

Yes...

Answer 2

It is possible. The more likely date would be around Jan 1. It depends on how long your cycle is (I based this on a 28 day cycle but if yours is shorter it is more likely that you could have conceived then.) If you were not charting and ttc then you could have ovulated earlier or later in your cycle than the norm, which is not uncommon, so it is hard to say if the dates for conception are very close to one another.

Answer 3

It is not uncommon to conceive on the 10th day of your cycle. Ovulation varies per cycle. While the average day to ovulate is on Day 14, that doesn't mean one can't ovulate sooner. Since a woman can get pregnant if she has sex within a couple days or so before ovulation and a couple days or so after, you could feasibly have conceived on the 27th.