I need some advice about my mental illness?

I am suffering a mental problem for 5 yrs. Problem is any bad event or accident occurs in my mind for few seconds and after sometime or on that day the accident happend in front of me, but I can't do anything. For exp before my husband accident in bike it occured in my mind and within 5 mints it happened in reality. Afterthat I suffered painfull day for longtime and I feel guilty. I always try to free myself, pray to God, want to busy in my house job. But always some bad thinking coming in my mind and I struggle my self to remove it. Please help and advise me how can I cure my mental problem so that bad thinking will not come and I will be happy. Most of the time I stay at home alone. This bad thinkings arise in my mind related to my mom or dad or my husband those I love so much. I donot want this I love them. Gradually it increases day after day, sometimes I hit myself in my body I want to confess to someone but I can't. I always pray to God so that my bad thinking will not be iin reality, and I scared about it. Please suggest me how can I remove my problem.