Dear Welcome to HCM We understand your concerns I went through your details. I suggest you not to worry much. Everyone has negative thinking about their past, present and future. People do adjust with their negative thinking and settle with positive ones to have peace of mind. In your case also, you are thinking negatively because of your culture and circumstances. don t worry. Whenever negative thinking comes, reassure you that your girlfriend is clean. If you have any doubt in that regard, please forget your girlfriend. If you require more of my help in this aspect, Please post a direct question to me in this URL. http://goo.gl/aYW2pR. Make sure that you include every minute details possible. I shall prescribe the needed psychotherapy techniques. Hope this answers your query. Available for further clarifications. Good luck.