Pregnant of a married man.!

I was dating this guy for about 4-5months or so. I didn’t he was married, once I found out I broke it off. Obviously we had sex and it turns out I’m pregnant 🤰

I’m about a month. Once I found he was married which was about 3 weeks ago I broke it off with him. But now I’m expecting a baby 👶

I’m devastated not sure if I should tell him and reach out or just have it an raise it on my own or ... I don’t know I hate being in this situation.

Please provide some advice