Billionaire Ex Wife Novel

It's about a billionaire who didn't trust his wife thinking that she was cheating on him although all the evidence and proof showed that she was but he did not trust her enough to believe her and because of this he sent her packing. Her parent did not believe her even her own friends and brother turned against her. She had no other choice but to leave the country even though she knew she was pregnant for her husband or was it her ex husband