Any Italians around?

[LiterallyLiterate]

I'm working on a little side project and need some input from someone fluent in Italian, ideally a native speaker.

Without going into any detail, I'm looking for a translation of a few phrases, or their culturally equivalent expressions. I'd rather not rely on simply google translate, that can easily lead to embarrassing mistakes.
So, my story involves an Italian woman on holiday. She's fluent in English, but in some rather passionate outbursts during sex, she reverts to her native tongue.

So first, I tried to find out what the usual term for saying Oh God/Oh My God, like an outburst of emotion would be. I came across the phrase Oddio. Is this something she would actually say? Or would Dio Mio be more correct/usual?

The other phrase I'm looking for is 'I'm coming!' No explanation needed, I hope. And I want the contextual translation, not literal, if that's an unusual way to say it.

Lastly, at some point she says 'Please cum/come inside me.' Again, what would be the Italian way to say this?

Anyone who can share some insights with me about this?

Thank you in advance!

 

[TarnishedPenny]

Italians around? Somma them, but usuly from near Bologna. Mosta Italians is thinna.

Sorry, just couldn’t resist.

 

[ChloeTzang]

I'm working on a little side project and need some input from someone fluent in Italian, ideally a native speaker.

Without going into any detail, I'm looking for a translation of a few phrases, or their culturally equivalent expressions. I'd rather not rely on simply google translate, that can easily lead to embarrassing mistakes.
So, my story involves an Italian woman on holiday. She's fluent in English, but in some rather passionate outbursts during sex, she reverts to her native tongue.

So first, I tried to find out what the usual term for saying Oh God/Oh My God, like an outburst of emotion would be. I came across the phrase Oddio. Is this something she would actually say? Or would Dio Mio be more correct/usual?

The other phrase I'm looking for is 'I'm coming!' No explanation needed, I hope. And I want the contextual translation, not literal, if that's an unusual way to say it.

Lastly, at some point she says 'Please cum/come inside me.' Again, what would be the Italian way to say this?

Anyone who can share some insights with me about this?

Thank you in advance!

Himself's Italian is about on a par with my Chinese, but he knows this one LOL
Formal
Dio mio! - “My God”)
Oh, mio Dio! “Oh, my God”

Informal
Oddio! - shortened form of oh mio Dio