Heartbroken 😞

Just found out that my boyfriend cheated on me ‼️ He had sex with another female. As soon as I found out, I told him that he had to leave our house. We have a 5 month old baby girl together, which I hate that I have to share with him. It hurts extremely bad. It feels like I’m going to die literally, it’s hard to breath, sleep, and eat. I don’t know what to do. How long is this going to take to get over? Will I ever completely get over him?