How do I deal with this

Mercedes
My fiance is newly incarcerated he had 3 warrants out for his arrest was in the process of paying them off then our house got raided we were also TTC and I may be pregnant will find out in a couple weeks but the day after this happened when I was letting his family know and trying too get money put on his books I was sent screenshots of him cheating on me with 2 other females. I don't understand how because he has been with me everyday when him and I first got together he told me that he used too play girls because he was quote married too the street but that there was something about me and our relationship was very solid till this I get too talk too him for a couple minutes everyday and I wrote him a letter explaining the situation and how I feel I am not going too leave his side especially now I love him with all my heart I just don't know what too do it's like my whole life is falling apart please help I don't know anymore.