How do I Trust Him Again?😢

We Barley found out I'm Expecting I'm 4 weeks ..... OK So yesterday I ask my So To let me borrow his phone to download an app I need in order to send some papers for My Insurance... Well to my acknowledge on the search thing it had that he downloaded BADOO WHICH IS AN APP FOR PPL TO GET TO KNW EACH OTHER . I confront him about and he lied saying he was trying to type fb and downloaded and I told him really niqqa u think I'm stupid or what , we barley had made a fb again due to trust issues but I didn't give him the password therefore no need for him to downloaded plus on the search tab Facebook wasn't type that's why I know he was lying to me ...... Then he said it was nothing bad o really I told him would u like it if I did that ? He didn't say anything .....

Fastward all night didn't speak to him I slept the opposite way of him I have blocked his calls and messages ...... I'm just hurt right now I answered one his calls and still says he did nothing wrong so I just hanged up on him..

Need advice help how do I go with this situation please?