I Took A Home Hiv Test And It Came Back

i took a home hiv test and it came back negative but after awhile a faint line appeared.took another test and it did the same thing.i then went to the pharmarcy "clicks" and got tested by a nurse and the results came out negative,i then explained the past experiences with the testing results and she said she strongly believs im negative but should go for blood testing...i am scared at the thought of might having hiv,my bf passed away last year from lung cancer apperantly,and also suffered from allergies like i am now.what do you think?