Well you have to trust your fiancé and give each other to develop this beautiful relations

I trust him alot i am just very negative about everything i have fear for everything i didnt want to stay in the city afted what i faced i dont want to still meeting him gave me to feel somethinh better yet somewhere i know he doesn't love me that way the girl who he wanted to marry ditched him that was while we were friends and since she ditched now he is wid me he lost his parents and the girl he loved i love him very very much but i feel what if i am not what he wants 2ndly the distance i am over protective person i fear things easily and the knowing we r going to be in distance keeps me very very restless i need peace in my mind i am disturbed and restless please i need some help or some suggestions

Have you tried talking to him about your insecurities?

Yes but then the thing is again he actually did nothinh wrong it has got to do nothing with him people suggested me break but given a break being away from him knowing that hes gonna be away from me to another city only made me worse my anxiety has nothing to do wid him i am just not able to calm my mind i am still in college so due to my studies i cant marry for a year sm1 who i feared losing to another girl who was his 10 years gf who ditched him now when i have him distance fears me

You gotta trust him and give it a chance. Don't let your past ruin your chances of a lovely future :)