My heart is heavy

My heart is heavy pls guys I need ur advice ...Let me cut the story short...Av know my bf for 4 years I loved him so much and I know he loves me too but he have dis habit of sliding into girls dm all his WhatsApp messages are full of girls chat,some will call him boo,bae,husband all sort of name but if I confront him he will tell me they are his friends that I can’t tell him who to make friends with..so have known him as a cheat here to what really happened...we’ve not seen each for over 1 month now and it usual of him I know something is happening but I don’t just want to go to his house without informing him so yesterday he asked me to come over,I spent d night with him we even discuss about his mom birthday so this morning he went out to see a friend...I woke up do the house chores He lives in a 3 bedroom..he uses the master bedroom while his lil sister use another room the other 1 left is d guest room..so I decided to checked the guest room as usual. Entering the room I saw big 2 traveling bag 1 hand bag I checked the hand bag saw a positive pregnancy results den all my body was shaking, I checked the box just to know who it belongs to I saw a passport picture (this girl is one of the girl he chat with on WhatsApp) and they are dating..I called my boyfriend and asked him what’s going on.he said what gave me the gut to enter his guest room..he started saying all sort of things that y would I check his guest bag..I quickly leave his house before he comes back cause I don’t want any trouble for myself guys I don’t know what to do with this guy..he never feel remorse.