11 months into marriage

Looking for advice !!!!!

So I had been dating my high school sweet heart for 10years

Of course had up and downs

As two teenagers falling in love would have along the way

Last year we decide it's time to tie the knot and start having our own little family

He proposed and we did it last August

Everything seemed perfect the first months

And then his attitude changed A LOooooT

Few months passed and he was acting more and more like an asshole

And he always kept himself busy 7 days a week at work

And never had time for me

This became a big issue because I was always upset when he canceled things together

I was always alone in family events

And everyone who loved him so much continued asking for him

All I could say is "he's working late"

Long story short

One night he didn't come to sleep and never answered me phone calls or texts

Until 7 am he came home

Telling me he had a few drinks and decided not to drive home.

That morning I packed his things and asked him to leave

Because he was acting very prideful and told me he didn't need to give me more explanations

Days passed and he didn't look to fix any thing

I asked him to come talk to me because I was broken

I could not believe how he can act as if our marriage didn't mean anything to

Me

He confessed that a couple of months ago he found out he might have a kid

Who is 4 years old

And the female wants him in their life

Last night he told me he was actually in a formal relationship while being with me too

And one day she told him she was pregnant and he became "scared" to lose me

So he blocked her number and ignored it

Now she reappeared and was upset that he married and threatened to not let him see the kid.

I believe he plans to end our marriage to be with her and the kid

He pointed out that maybe it was meant to be

Because me and him haven't been able to get pregnant and that girl did so easily

That broke my heart

Because although we've been together for many years

It is now that I began to conceive and it just hasn't happen

And this other female who is older than him with another kid from another man

Gave him his first child

He asked me to let him think about what he will do

But I'm here broken down

Because it was something I never expected from him

He says he needs to get a Paternity test first and will go from there

What do I do? Although I already kicked him out