Scarleteen

Hello, Scarlateen.

A question, Is this possible ...?

Intercourse 1 or 2 days before period, then period starts, then conception just after period?

Thanks.

It's possible, but very highly unlikely, simply because someone who is ovulating is generally not going to be menstruating just a couple days later (as very different hormonal signals need to be sent), and certainly not at the same time.

Here's why, in the event you don't know how the fertility cycle works: Get With the Flow: All About FAM.

Oh, I think I didn't write it right.

I mean:
Intercourse > 1 or 2 days after intercourse, period start > Ovulation and conception just after period finished.

People can ovulate soon after a period is finished, sure, however, sperm cells cannot survive in the vagina both for that long (from intercourse before a period has even begun) nor through days of menstrual flow.