MY HUSBAND IS CHEATING

so....

This guy sent me screenshots of my husband messaging his girlfriend to set up a time to meet for Sex this week. I asked my husband about it and he is denying it. I asked to see his phone and he starts deleting shit off Instagram before I can see the messages...

I’m about to have our 2nd child together in May.

I don’t know what to do. I have to leave him but right now, I don’t even know where to start.

I’m so heart broken.