Title says it all really.
We've been together 4 years, I'm pregnant with our first at just over 7 months.
Never suspected anything of him and relationship has been great the whole 4 years. It's come to light over the past week or so that around Christmas time he had messaged and called his ex girlfriend when out drunk. I found this out at the time and we rowed about it and almost seperated but decided to stay together and move on as he hadn't actually cheated (I didn't know I was pregnant at this time).
Over the past week or so, I've found out (from going down his phone admittedly) that the night this all went down I believe him to have went back to her house. I'm heartbroken and not sure where I can go from here really. He swears blind that nothing happened. It wasn't her house he went round, it's just a coincidence (I only found out that it was her road through some immense digging online) he was at his mates house etc etc. It's not a big road, it's a tiny cul de sac with 20 houses max. We've had big rows about it but I'll be honest I just don't believe him. I never had any reason to doubt him and I trusted him 100% but this is just too much of a coincidence for me to believe him.
I don't know what to do 😪