My worst nightmare happened. Yesterday my Husband our of nowhere told me he wasn’t happy with me or…

My worst nightmare happened. Yesterday my Husband our of nowhere told me he wasn’t happy with me or our marriage and that he feels like he rushed it and he just want to be single and by himself. I got 4 more weeks to go and he said he didn’t want to tell me because he thought that with me going through pregnancy he didn’t want me to stress... Last week I had finally told him that I knew he was talking to his ex girlfriend and I don’t mind & care considering this isn’t the first time he has done it. And yesterday he told me that. I’m so filled with mix emotions and everything. I can’t help but cry. After everything this is what he says to me. And what’s crazy he said he was not really happy before he married me and he thought to himself it was temporary and it’ll get better. And now that we’re married and expecting a baby he wants to say all that. Guys I’m really going through a tough time right now. Idk what to do or what to feel... I told myself I wouldn’t let it get to me but how could I not after what he said to me...I feel so bad for my unborn son and this is not what I expected.