Can you jump/dive into a pool when you're 9weeks pregnant?

Should be ok: As long as u are not having problems, just dont do a belly flop.

Sure!: I would only recommend avoiding high velocity water impact feet-first, as it may force water into your vagina and increase complication risks. Unless your obstetrician has told you otherwise, swimming is safe throughout pregnancy within reason (i.e. In moderation, in clean pools or oceans/lakes). Enjoy!