Can't cope after rape

I'm finding life so difficult at the moment. I was raped less than four months ago, but felt I was coping ok. I was raped on my hen do, and I got married 6 weeks later, my husband was very supportive, now it feels as though it was such a big mistake. He is always shouting at me and I know he is looking at other women, I feel I just can't cope anymore, and I am constantly having panic attacks. I feel I really can't live my life anymore, it hurts so much, my life that I once thought was as near to perfect is now nothing, and I just wish I could disappear. I've never done this sort of thing before but I really don't know what to do, please help?